There is a lot of different opinions going about R3V discussing the urethane diff mount bushing. I got a 89K M3 diff and the cover and bushing look great. Nando was advising people against the urethane diff bushing in some threads I search and found, as well as others.
Trent said if I was going urethane around the back, I would want to upgrade the diff bushing as well.....but he's the only one.

Hmmmmmm.
Trent said if I was going urethane around the back, I would want to upgrade the diff bushing as well.....but he's the only one.

Hmmmmmm.
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