BlackHeart LS Swap Exhaust Manifolds-Rear Dump SBC Exit-Black - 8506-3HKR single-plane-intake-manifolds 8 L6 1969 - 1973

8 L6 1969 - 1973 Chevrolet K30 Pickup 250/4

5 V8 1975 Pontiac Firebird Trans Am 400/6

Oxygen Sensor Location Pre and Post Converter Heat Shield Included Yes Mounting Hardware Included Yes Series HM Grade Body Material Stainless Steel Subtitle Federal / EPA Compliant Overall Length (In

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5411652

BlackHeart LS Swap Exhaust Manifolds-Rear Dump SBC Exit-Black - 8506-3HKR single-plane-intake-manifolds 8 L6 1969 - 1973For 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 and rear dump SBC exit 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. While almost the same as