Big Block muffler choice

My idea includes two of these

DC Sports Universal Round Muffler 2.5" Inlet 3" Outlet

DC is a quality brand from the JDM tuner world. It’s straight through, 2.5” ID to 3” OD so you can reverse it.

Run them after the axle, all the way to the bumper if you want to run tips, and weld the tips on the end of the mufflers.