Practically brand new borla atak axle back exhaust! Only has about 200 miles on it. Absolutely nothing wrong with this exhaust, I just decided I wanted a little more volume so I switched to the cat back kit. This ATAK kit has a great sound and will fit any 05-09 mustang gt with a 2.5" pipe (including the stock exhaust). For anyone worried it this exhaust will be too loud....it will not! I was afraid of the same thing, but it is only loud when you want it to be, with a nice deep, tuned sound that is unmistakably mustang! Feel free to PM me if you have any questions. Thanks for browsing!