From a performance standpoint I'm trying to find out the differences between these cars. Most places such as bavauto, bmpdesign, and turner only show parts for the 633. So I wanted to make sure most of it is interchangeable. Would a cam for a 633 fit an 80 635? Are the shocks, springs, and sways the same across the model range? Motronic didn't occur until 82, would I need adjustable fuel meter/calibrator to do the same job as a chip on a later car? Also, I just read the pre 82 had four pot front calipers and all vented discs
*deep breath* . . . Any ideas?
__________________ "I would not know what the spirit of a philosopher might wish more to be than a good dancer."
- Friedrich Nietzsche
1980 635csi Euro . . . Current
1985 535i . . . Soon to be parted out
2001 Subaru Forester . . . DD