These Hooker BlackHeart LS Swap Headers work perfectly with 1967-1969 GM F-Body (Camaro and Firebird) and 1968-1974 GM X-Body (Chevy Nova, Pontiac Ventura, Buick Apollo and Oldsmobile Omega) vehicles routing exhaust gases away from the engine while enhancing power and torque. Hooker's mid length headers provide the optimum horsepower possible from a mid-length design.