I have a used full RPI street catback exhaust system for a E60 M5, from the headers back for sale. This is by far the best sounding exhaust system I've ever heard. I use to get compliments all the time when drivng my beast. I purchased this exhaust along with the RAM AIR INDUCTION KIT with block off plates brand new from RPI for $3500. I will sell the exhaust for $2700 OBO and the RAM AIR INDUCTION KIT for $200 OBO. We can put together a package or I can sell it out part by part. I live in Phoenix, Arizona, pickup is welcomed. If interested please email me at [email protected] preferably, or reply to the thread. I also have pictures! Thanks for your time!!