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Doug's Headers 1937-74 Cars & Trucks with Mustang II Suspension LS Engine Swap 1 3/4" Long Tube Header D3347

Doug's Headers 1937-74 Cars & Trucks with Mustang II Suspension LS Engine Swap 1 3/4" Long Tube Header D3347
Doug's Headers 1937-74 Cars & Trucks with Mustang II Suspension LS Engine Swap 1 3/4" Long Tube Header D3347
from $1,494.80 st

Available Options

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Model: 5124730
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Long tube headers provide the greatest increases in horsepower and torque across the entire RPM spectrum. The choice of racers worldwide, Doug's long tube headers are designed for the car owner who wants maximum power and the highest quality header on the market. This fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.
Features:
  • 3/8" Thick machined flanges to prevent warping
  • Precision formed long transition collectors and long tube design reduces backpressure and increases higher RPM horsepower
  • Heavy duty 16-gauge tubing for long life
  • Tubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating
About Doug's Headers

Doug's Headers are a fixture in the motorsports aftermarket, pioneering quality muscle car performance headers for decades. Unlike the competition, Doug's Headers prides ourselves on superior design detail resulting in a hassle-free installation for any application.

Downloads:

Download Name File Size
D3347.pdf342.97KB
D3347-B.pdf342.97KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Chevrolet Camaro 1967 4.9L / 302 / V8
5.7L / 350 / V8
6.5L / 396 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1968 6.5L / 396 / V8
5.7L / 350 / V8
4.9L / 302 / V8
5.4L / 327 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1969 6.5L / 396 / V8
4.9L / 302 / V8
5.0L / 307 / V8
5.4L / 327 / V8
7.0L / 427 / V8
5.7L / 350 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1970 6.6L / 402 / V8
5.0L / 307 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1971 5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1972 5.0L / 307 / V8
6.6L / 402 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1973 5.0L / 307 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Camaro 1974 5.7L / 350 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Camaro Emission Vehicles in 50 States
Not Legal for use on 68-74 Camaro Emission Vehicles in 50 States
Chevrolet Chevelle 1964 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1965 6.5L / 396 / V8
4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1966 6.5L / 396 / V8
4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1967 6.5L / 396 / V8
4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1968 6.5L / 396 / V8
5.0L / 307 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1969 6.5L / 396 / V8
5.7L / 350 / V8
5.0L / 307 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1970 7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 402 / V8
5.0L / 307 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1971 7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 402 / V8
5.0L / 307 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1972 7.4L / 454 / V8
5.7L / 350 / V8
5.0L / 307 / V8
6.6L / 402 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevelle 1973 5.7L / 350 / V8
5.0L / 307 / V8
7.4L / 454 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 64-67 Chevelle Emission Vehicles in 50 States
Not Legal for use on 68-73 Chevelle Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1963 4.6L / 283 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1964 4.6L / 283 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1965 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1966 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1967 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet Chevy II Nova 1968 5.4L / 327 / V8
5.0L / 307 / V8
6.5L / 396 / V8
5.7L / 350 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 63-67 Chev II Nova Emission Vehicles in 50 States
Not Legal for use on 1968 Chevy II Emission Vehicles in 50 States
Chevrolet El Camino 1964 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1965 4.6L / 283 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1966 4.6L / 283 / V8
6.5L / 396 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1967 4.6L / 283 / V8
6.5L / 396 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1968 5.4L / 327 / V8
5.0L / 307 / V8
6.5L / 396 / V8
5.7L / 350 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1969 5.0L / 307 / V8
6.5L / 396 / V8
5.7L / 350 / V8
5.3L / 327 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1970 6.6L / 400 / V8
5.0L / 307 / V8
7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 402 / V8
6.5L / 396 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1971 7.4L / 454 / V8
5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8
6.6L / 400 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1972 7.4L / 454 / V8
5.0L / 307 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet El Camino 1973 5.0L / 307 / V8
7.4L / 454 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 67-67 El Camino Emission Vehicles in 50 States
Not Legal for use on 68-73 El Camino Emission Vehicles in 50 States
Chevrolet Nova 1969 5.0L / 307 / V8
6.5L / 396 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1970 5.0L / 307 / V8
7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 402 / V8
6.5L / 396 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1971 5.0L / 307 / V8
7.4L / 454 / V8
5.7L / 350 / V8
6.6L / 402 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1972 5.0L / 307 / V8
6.6L / 402 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1973 5.0L / 307 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Nova 1974 5.7L / 350 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 69-74 Nova Emission Vehicles in 50 States
Chevrolet Truck 1937 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1942 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1943 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1944 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1945 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1946 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1947 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1948 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1949 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1950 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1951 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1952 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1953 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1954 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1955 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1956 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Chevrolet Truck 1957 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 37-57 Chevy Truck Emission Vehicles in 50 States
Ford F-100 1953 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 53-56 F-100 Emission Vehicles in 50 States
Ford F-100 1954 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 53-56 F-100 Emission Vehicles in 50 States
Ford F-100 1955 4.2L / 256 / V8
4.4L / 272 / V8
3.9L / 239 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 53-56 F-100 Emission Vehicles in 50 States
Ford F-100 1956 4.4L / 272 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 53-56 F-100 Emission Vehicles in 50 States
Ford F-1 1948 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 48-52 Ford F-1 Emission Vehicles in 50 States
Ford F-1 1949 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 48-52 Ford F-1 Emission Vehicles in 50 States
Ford F-1 1950 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 48-52 Ford F-1 Emission Vehicles in 50 States
Ford F-1 1951 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 48-52 Ford F-1 Emission Vehicles in 50 States
Ford F-1 1952 3.9L / 239 / V8 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 48-52 Ford F-1 Emission Vehicles in 50 States
GMC Sprint 1971 7.4L / 454 / V8
5.0L / 307 / V8
5.7L / 350 / V8
6.6L / 402 / V8
6.6L / 400 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 71-74 Sprint Emission Vehicles in 50 States
GMC Sprint 1972 7.4L / 454 / V8
5.0L / 307 / V8
6.6L / 402 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 71-74 Sprint Emission Vehicles in 50 States
GMC Sprint 1973 5.0L / 307 / V8
7.4L / 454 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 71-74 Sprint Emission Vehicles in 50 States
GMC Sprint 1974 6.6L / 400 / V8
7.4L / 454 / V8
6.6L / 402 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Not Legal for use on 71-74 Sprint Emission Vehicles in 50 States
Pontiac Firebird 1967 6.6L / 400 / V8
5.3L / 326 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1968 6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1969 6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1970 6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1971 7.5L / 455 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1972 7.5L / 455 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1973 7.5L / 455 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States
Pontiac Firebird 1974 7.5L / 455 / V8
6.6L / 400 / V8
5.7L / 350 / V8		 With GM LS Engine Swap.
Requires Doug's LS1 adapter plate kit P/N SK100 or equivalent.
Fits TCI or equivalent Mustang II Suspension Rack and Pinion equipped cars only.
Header has 02 Sensor Bungs.
Full-length
Legal for use on 1967 Firebird Emission Vehicles in 50 States
Not Legal for use on 68-69 Firebird Emission Vehicles in 50 States

Specifications:

Collector Attachment 3-Bolt Flange
Collector Diameter 3.0 IN
Collector Port Diameter 3.0 IN
Cylinder Head Port Shape Round
Design Full-length
Flange Thickness 0.375 IN
Gasket Or Seal Included Yes
Gaskets Included Yes
Grade Type Performance
Header Style Full-length
Mounting Hardware Included Yes
Oxygen Sensor Port Yes
Part Type Exhaust Header
Port Shape Round
Primary Tube Outside Diameter 1.75 IN
Proposition 65 www.P65Warnings.ca.gov
Tube Wall Thickness 16 GU
Warranty Time 24 Months

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Doug's Headers 1937-74 Cars & Trucks with Mustang II Suspension LS Engine Swap 1 3/4" Long Tube Header D3347:
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