I bought my new SRT6 this fall and it only has 1,040 miles on it now. I've been putting the miles on my leased coupe. I was thinking about putting an aftermarket muffler on the SRT6, it is kind of quiet, but it also sounds different than the coupe. When I leased the '04 coupe it was also kind of quiet too, but now that it has around 30K miles on it, it is a lot louder than it was when new. I guess what I'm asking, is there any SRT6 guy's out there with 10k miles or so on your car that noticed if your cars got louder as the muffler got some miles on it?