Have been slowly working on it. Managed to get the new muffler and tailpipe fit yesterday afternoon. Snagged a Walker Quietflow SS and matching 4" tailpipe for a 2001-2006 3500HD with a 6.0L or 8.1L from Summits scratch and dent clearence area. Fit the 97 Van like it was made for it. Muffler is dual 3" in, single 3" out and the tailpipe is 4" but necks down to 3 where it slides into the muffler.

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https://youtu.be/zJBiw3xkiYY

https://youtu.be/bq8CAvqnubU

1983 G20 Conversion Van, 350 TPI, Reed Hydraulic Roller cam, Ported 906 Vortec, Edelbrock 3817 TPI-Vortec Base, Doug Thorley Tri-Ys, Dual 2 1/2" exhaust, Speed Density 7730 ECM tuned by ME, 700r4 by ME, Stock 1,600 rpm converter, Rebuilt Stock 10 bolt with posi by ME, 3.08 gears, 358 RWHP @ 5,200, 384 RWTQ @ 3,400, 14.66 @ 95.43 w 2.28s 60'