I hope that link works. That was the post a little while ago about the m3 exhaust. I also put some pics of my exhaust on my 325. Sizes of pipes and how it looks on the outside. Its heavier than my stock 325 system, but I do feel more torque plus they are preaty cheap.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.