Lee TRUST ME !!!! you DO NOT want his exhaust lol!!!!! It sounds like a pro-stocker from the back and on the inside you cant think or see straight Thats exactly how he likes it though I think it is 3" all the way back from headers, no cat or res, and flowmaster style muffs. In person it is very very throaty sounding, one of the best sounding 3800s I have heard, but again very loud!