Thanks for all the suggestions guys!
Neo, you have no idea how much I want to track the M!

But my motto is "if you're not willing to wreck it, don't track it". For now, the M3 is doing autoX duty (seems kind of backwards, doesn't it...M3 for autoX, GSR for track.

). Next year, though, the M will see some track time.
I think Jay at ground control is going to be pretty happy with me soon...I'm also debating whether to first get coilovers or swaybars for the M3. Decisions decisions...