Hi! I have an 07 Cooper S and I would like to put an exhaust and down pipe. I want to put the borla s type exhaust with the cnt racing catted down pipe. These will be compatible with my car and each other right? I will be getting it installed in a shop. I just want to know if I can do this setup so I can order the parts. Do you guys recommend any good/loud exhausts?Also, if I just change the stock down pipe to the cnt racing one and keep my stock exhaust, will that make any difference or is it better to change both?Thanks!