Did mine in the gravel driveway with a borrowed floor jack and some plywood under it. One side went fine, the other was as easy to get out but getting the engine to align with the new one required prying, crowbars and 2x4's to horse the engine around a bit to get it to line up. Oh yeah- that was the side where the mount came out in two pieces...

Clean, clean, clean the allen head bolts before you start. I spent the $$ to get some allen head sockets.
The engine shocks have been covered- You may need to loosen the fan shroud- watch it as you jack up the engine.

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95 E300D gave away
77 300D, 227k, station car
83 300CD 370k, body gone away to the rust gods, engine is in a Yota pickup, going strong
89 190E 2.6- 335k, no more
79 VW FI Bus- 154k summer driver
59 VW Beetle ragtop- 175k
12 VW Jetta- 250k
74 MG Midget-78k