We wanted to introduce our Secondary diff mount prototype pictures to your guys! Completely cnc machined inhouse from 6061 aluminum. We are just finishing up some test on it as well as a more refined mounting solution to the trunk and they will be ready for release. These can be ordered though the website http://store.garagistic.com/e30-secondary-diff-mount . Kit will include everything needed for install (including a trunk mount bracket).
These secondary mounts will help eliminate differential movement in high powered e30s (including the guys running our v8 kits). By providing second mount you also take stress off the original single mount. Great for use in track and drift applications as well.
Poly/delrin differential bushings will be an option for those interested.