Oh man, forget those M42 ones. Yes, the ride is a LOT more comfy with the nice hydraulic ones...but ONE of the M42 stockers costs more than two of the E28 ones. I will not lie, after puttin on the E28 ones, you will probably be pissed. I was for about 2 days because everything that could rattle DID. Well, the lighter flywheel really reeeeally didn't help, so with a stock FW it might not be so bad. It was well worth it though. It eliminated so much bogging...the throttle response was phenomenal. I have done it on both of my 318iS's.
PN 11-81-1-132-793
Enjoy.