Thanks everyone for the input. I'm not a "wrencher" whatsoever and the more I think about it the more I migrate to a newer BMW as a track car.
In fact tomorrow I'm going to see a 100% stock 2003 M3 SMG with 18's (listed for $11K). I figure after some basic maintenance (fluid flush, etc), tires, alignment and brake pads, it's ready for the track. Plus I can beat the snot out of it and not worry much.