Garagistic M60 mounts, anyone use the rear position?

[Italian_Tuneup]

I really don't want to have to clearance my firewall to fit the heater hoses, etc. Anyone use the rear holes on the mount successfully? I've seen writeups expressing concern over driveshaft spline engagement, has anyone had that issue? I'm going to be running the ZF 5 speed with a E36 M3 driveshaft.

[jpod999]

My M62 is installed such that the engine is in the further forward position, but I have a 420G so I can't speak to the driveshaft spline engagement.