Could any one help me.I have an e36 with a 1.8 SOHC (M43) manual engine, and would like to know if I can put a 2.5 or 2.8 lump in.I need to know what modifications i would need to do. If anybody can advise I would be very grateful. Regards Jason.

I've seen M50, M52, S50, and S52 swaps done in E36 318's. I'm not sure of the exact work done it though, but it is possible.