They are kinda hard to find and or really expensive new.
If you want a conversion Bosch and eurolite make them for around $30-40 each. Just don't spray cold water on them when they are on.. they'll break! I keep learing this hahaha
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,