Z3 rear arms onto an e36 compact to make the overall track wider (the same rear end as an e30) - YouTube
GaragE36 - Bmw E36 Compact Disc Brake Rear Subframe. Full rear end from a bmw E36 compact with disc brakes. Good to use to upgrade your drum braked e36 compact to discs
BMW E30 Z3 E36 COMPACT CUSTOM REAR AXLE - REAR CAMBER & TOE ADJUSTMENTS - MILLED | eBay