Yea BABY! those revs sound sweet with the ultra flows...much better sounding than the flows in my opinion...i know the ultra flows are quieter than flowmasters but to be honest most flowmaster cars that i have heard arent that loud, so im hoping mine is louder with dynomaxs lol....mullinax what is the compression on your motor? straight through mufflers doa very good job of quietening down low compression motors, but as the compression gets higher, they do are louder (something im looking forward to with 10.5:1 cr lol)...oh and my vote is leave the tailpipes off! resonation makes you really feel the power!