I had a flowmaster 40 on my bone stock motor and it sounded very V8, I even had people ask me when did I drop in a V8 (which made me mad). Then I welded on a magnaflow and it was quiet with a low tone. Hope this helps.

77 stepside, 250ci, Offy intake, DEMON 4brl, headers, ACCEL coil,
I-6 POWER!!!!!!!!