I am running a Stratmosphere exhaust on my MCS. Its just a little too loud for my taste. This system has 2.75" pipe, and is built in sections with flanges. I sanded all of the flanges and installed new gaskets, there are no leaks. I installed a resonator to quiet it down some, but it didn't do what I wanted. This is a daily driver for me, and just annoying some times. I still have the section of straight pipe if you want to go back to that. The system sounds fantastic at idle and above 4000 rpm. I'm still running it, so I would be happy to meet and let someone drive the car to see if it is what they would like. I've got over $500 in this, so I would ask for best offer.
I would be interested in a trade with a factory JCW exhaust system (mid pipe and muffler section). I can help with install if that is an issue.