turtle5353's post in Pypes exhaust question? was marked as the answer
Some people have had good luck with the pypes kit but I could not get mine to fit for shit. If you have a local custom exhaust shop near you, I would highly recommend going to them and have them install a custom exhaust for you. I did that on 2 Mach 1's so far and I am really pleased how it came out. It cost me about $100-150 more than the pypes kit, but I didn't have to do anything but drop the car off and pick it back up. Also they welded the joints instead of having 10 clamps all through the system. I also went with the X-pipe because that's what the gentlemen recommended at the shop. He used Flowmaster FX series mufflers and 2 1/2" stainless.