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Highlights

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.

For 5.7-6.4L Gen III Hemi Swaps. See complete list of vehicles on the product page under view all applications.
3/8” thick machined flanges to prevent warping
CNC mandrel bent tubes for an accurate fit and improved flow
Durable 16 gauge tubing
1 5/8" Primary Tubing Diameter
3" Collector Port Diameter
Same as Port Port Shape
Metallic Ceramic Coating

Why pick Doug's Metallic Ceramic Coating finish?

Our Metallic Ceramic Coating protects and extends the life of headers by creating a thermal barrier which

1968-74 Mopar B-Body/E-Body 1 5/8" Long Tube Gen III Hemi Engine Swap Header with Metallic Ceramic Coating