Long Tube Headers for 70-81 GM F/A Body 396-502 BBC 1-7/8in Primary D316 egr-valves-and-parts Keep the check engine light

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51867

37 Outside Circumference (mm) (Belt): 1381 Top Width (in) (Belt): 0

HDR CRMC 66-74 CHVY/GMC TRK

If you are drum/drum you will also need a metering valve**

Long Tube Headers for 70-81 GM F/A Body 396-502 BBC 1-7/8in Primary D316 egr-valves-and-parts Keep the check engine lightOverview: 70 81 GM F & A Body BBC Long Tube Silver 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