pnosker,
if your dropping the tranny, it will be expensive either way... unless your meaning sub-$200 for just the parts...
there could be more to it, Ive only slightly looked into it as ill be venturing into changing out my clutch soon due to a failing release bearing...
but change the throwout/release bearing while your in there, and look into a pilot bearing if one doesn't come with your clutch kit.
http://www.carcare.org/Manual_Transm...tch_disc.shtml ... good read on the workings of a manual tranny and the main wear parts if you navigate the links on the right.
as for that SACHS ebay clutch/flywheel.. it says its useable for all E36 basically, incl. M3... I was under the impression if you put an M3 clutch in there you would have to upgrade the master/slave cylinder... can anyone tell me whats up with that?