Hooker BlackHeart LS Swap Exhaust Manifolds-Rear Dump-Black - 8505-3HKR cylinder-heads-and-parts proper calibration is difficult if

proper calibration is difficult if you don't know the exact percentage of ethanol-to-gasoline in the fuel

1L/L6 1971 - 1972 Buick Centurion 7

Fits w/ 82209916 Rear Bumper

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52726

6 V8 1962 - 1965 Ford Fairlane 170/2

Hooker BlackHeart LS Swap Exhaust Manifolds-Rear Dump-Black - 8505-3HKR cylinder-heads-and-parts proper calibration is difficult ifFor applications or projects where our standard LS swap manifolds (8501HKR, 8502HKR, 8503HKR series) don't quite fit and our "center dump" manifold (8504HKR) exits too far forward, our new "rear dump" cast iron swap manifolds have arrived. These differ in that they exit in a straight down fashion much like a block hugger header but exit more toward the rear of the engine than our "center dump" manifolds. Cast out of the same Hi Silicon Moly Ductile