Doug's Headers D308-SS 304 Stainless Long Tube Header 67-87 GM F, G, & A Body 265-400 SBC 1 5/8" Primary 3" Collector

Features & Benefits Natural stainless-steel finish offers superior resistance to rust and corrosion 3/8" thick 304 stainless machine flanges to prevent warping CNC 304 stainless mandrel bent tubes for an accurate fit and improved flow Precision formed long transition collectors and long tube design reduce backpressure and increase higher RPM horsepower 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 the enthusiast who demands the best, Doug's Headers are not just components; they're a statement of excellence, a commitment to leading-edge performance, and a nod to the glory days of muscle cars and drag racing. Join the ranks of champions. Experience the unmatched quality and performance of Doug's Headers today.Specifications Finish 304 Stainless Steel Material 304 Stainless Steel Design Full-length Primary Tubing Diameter 1.625 IN Collector Port Diameter 3.0 IN Port Shape Oval Tube Wall Thickness 16 Gauge Flange Thickness 0.375 IN Collector Attachment 3-Bolt Flange EGT Port No Oxygen Sensor Port No Gasket Or Seal Included Yes Mounting Hardware Included Yes Color Silver Sheen Level Satin