Long Tube Headers for 70-81 GM F Body 265-400 SBC 1-3/4in Primary D324-B flowtech 4L V8 1976 Chevrolet G20

4L V8 1976 Chevrolet G20 454/7

2-Port Bypass Regulator

this direct-fit catalytic converter also interchanges with OE parts 208B2-AC325

28950-3C250

Long Tube Headers for 70-81 GM F Body 265-400 SBC 1-3/4in Primary D324-B flowtech 4L V8 1976 Chevrolet G20Overview: 70 81 GM F Body SBC Long Tube Black Ctd 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