Ireland engineering has pretty much every bushing you'll need.. they are one of the cheapest out there.
Only problem is when you run ALL urethane the car gets pretty noisey. personally i prefer factory rubber shock mounts and subframe bushings, all the rest should be urethane. you gotta have some "give" somewhere.
E30 Stuff For Sale: Clutch Fan and Shroud, 4 Pack Ignition Coils, ATE 750il MC (New), Offset Trailing Arm Bushings, m42 Valve Cover (Clean), M10 Engine Mounts (New), M42 Injectors,