ahhh you are rite! i've never seen an e30 M3 in the workshop, but i've heard of the S14 engines. They are a 2.3L 4 valve inline. the e36 came with the 6 (S50, 3.0L/3.2L)
bimmer parts are sorta expensive, but you save alot if you do the work yourself. our workshop rate is $115.00 an hour, and its about that much for BMW dealerships anywhere. The e30's are pretty reliable and are better designed than the early E36's anyways.