I have a similiar situation with my '93 190E 2.6. I'm not experiencing any diff whine that I can hear, and last time I was under the car I looked at the flexdisks and they *seemed* OK. Just changed the diff oil. I can't seem to find a part number for a differential mount, and there is nothing listed at Fastlane as a diff mount for this car. When I first put the car in D in the morning however, I have to idle it from a stop or else I get a thump from the rear end. The rest of the day it doesn't do it. Seems like it has a lot of slop in it though, because when I let off the throttle at speed I can feel the sloppiness. Anyone know about a diff mount for these cars?

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'02 BMW 325i
'85 300D 450k
'93 190E 2.6 170k(killed by tree)
'08 Ducati Hypermotard 1100S 6k
'06 Ducati S2R800 14k(sold)