As J.H. indicated in a separate post, the differential mounts are a bit of a PITA. If you have a good set of tools and can handle some easy fab work, it's not so bad. I wrote up a little how-to article when I did them.

http://www.peachparts.com/shopforum/showthread.php?threadid=23292

Good luck,

__________________
D.H.

04 ML500
02 E430

Experience is something you don't get until just after you need it.