I put a 455 Pontiac in a 85 3/4 ton 4x4 Chevy Truck. It breaths through a set of 3 tube headers (four tubes wouldn't clear)and 3" dual exhaust with a pair of Dynomax Ulta Flow Welded mufflers, dumping out directly in front of the rear tires. I ended up using the origional Chevy 350 motor mounts, with minor modification work to the engine crossmember.
