I have a pair on order for small block. If they do not work, I will go to stock mufflers. I cannot stand the drone on the Dynomax on the car now at hiway speeds. Mine could be rattling now but I could not tell.

Craig

2014 Ram 1500 Laramie, 73 Cuda
Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango
Only previous Non-Mopar: Schwinn Tornado