I have a 1987 535is with an automatic and would like to do a five speed swap. I would like to get the parts needed by purshasing a parts car. My question is what car or cars should I be looking for? Will a 325e or 528e work or do I need to look at 5 or 6 series cars like the 530, 533, 535, etc. This has had me stumpped for six months, help!!!!!!!