Shocks and torsion bar do not need to be disconnected for engine mounts, just lift the engine. The challenge is getting the left side in there - not much clearance to get that part in.

Obviously you can't just "lift the engine" without loosening/disconnecting some things. Think---radiator shroud, etc. Are you going to do the engine "shocks" also? "Now is the time!" since it is way easier to get to the mounts from the top if you pull those shocks.

best,

Dave
87 560sl