gixxer - I actually bought it off a friend who never installed it and sold his M3. I got it from him for $2k.
Arkady - I plan to take pictures before and after and I will try and get some sound clips as well. I just need to find a replacement battery for my video camera and find somebody who is less computer illiterate as I am to get it from my video camera to the internet.
2006 BMW M3 Convertible - Sold