Sorry to keep this thread coming back but I think I may have pin pointed our rum in the rear.

Behind the differential is a mount that connects it to the unibody frame. When I pulled this off the inside of it was mostly rubber. On my car the mount had most of its rubber hardened.

Fastlane has them listed at around 80$ , but auto haus has them for 40. I'm tempted to buy a new one and see what happens.

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-Typos courtesy of my mobile phone.