I purchased this 3" cat-back exhaust system brand new approximately 2 years ago and have the receipt for it. It costs over $1200 new and is the best sounding (IMHO, as well as everyone who has heard it in person) exhaust available for these cars. I have listened to everything out there over and over again. Supposedly, it adds 9 rwhp to the car but the sound alone is worth it! It sounds docile but yet great while cruising (keeping the wife and passengers who want to talk happy) but sounds incredible when really stepping on it! I have approximately 15k miles on this exhaust (20k on the car) and (not that it matters) I don't drive my car in the rain. My car is lowered and so I did lightly scratch the BOTTOM of the tips when going up a steep incline once, but you can't see it while on the car. Other than that it is perfect. Why am I selling it? Not because I want to, I can tell you that. I'm selling the car too.
I can post more pics from under the car if someone really needs that.