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Chrysler engineers didn't screw around when they designed the Max Wedge exhaust manifolds. Note how the three leading runners for cylinders 2, 4, and 6 are merged into a common 3-inch outlet while the No. 8 runner enters separately. This prevents the exhaust pulse from the No. 6 cylinder from partially blocking the flow from the No. 8 cylinder. This pulse separation effect is even more beneficial on the driver-side bank, where the No. 5 and 7 cylinders fire successively 90 degrees apart in crankshaft rotation. These excellent cast-iron reproductions from Mancini Racing weigh 32 pounds (driver side) and 27.5 pounds (passenger side) and are designed to fit '62-'65 B-Bodies, but may interfere if used in other Mopar body types.