Just got a message on ebay from the guy:
"If you would like to see my M3, I am available after 12 noon this Sunday or anytime Monday. Please forget your PC, I will not allow it to be connected to my car."
So now I think somethings suspicious and not buying anything from him.
That's shady to send me especially since the guy at his shop didn't have a problem with it as long as he was watching. He wasted my time and his, silly E46 owners....
Thanks everyone for your input. Right now I'm seriously considering supercharging the M3, just worried about the 2008 bearing situation.