320i question.
 

I have a chance to get a pretty decent e21 it needs a starter and a brake caliper. which I can get from a local junk yard. but I have an extra starter and brake parts from my e30 and e28. will the starter from an m20 work in an m10 and will the caliper from the e28 work on the e21?

For the caliper check bore, stroke and physical casting/fitment. Starter is again checking dimentions, actuation and fitting. Beware of different teeth-per-inch on various pinions/flywheel ring gear. The unit is electrically capable.

Alright thanks I'll check it out.