Ralph is getting 350 swapped, soon. Extrude honed 1992 manifolds, 2.5” pipes into a 2 in 2 out baffled X muffler, dual glasspacks, to turn outs/turn downs.
Have an all 2.5” on a Vortec 350, backed by an NV4500. Ran a Temu sourced chambered X muffler, no tails or turn downs. Sounded great...