Just an update, picked up an '01 Dinan 330i yesterday. As soon as I replace the rear diff bushings I'll get to work on the Car PC.
*edit*
Adding this as a reference for when I start:
http://www.mp3car.com/vbulletin/rr-p...bus-heads.html
http://www.mp3car.com/vbulletin/1208123-post31.html