My mechanic no longer does diff mounts or rear subframe mounts -- he works by himself, and he's semi-retired -- claims doing either job makes it almost impossible to work the next day!
Diff mounts are best removed with an air chisel, they almost never pull out of the subframe with a puller. Don't know about subframe mounts, but they look to be a serious pain, too.
I know what you mean about looking -- I've got to find out why I have serious torque steer on the 87 300D -- an expecting at least one link to be bad, am hoping it isn't bushings.
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!