[darkman]

Can you see the rear diff bushings without removing the exhaust? I'm going to look at one this weekend, possibly purchase, I'd like to inspect it.

I don't think you see the OEM rear differential bushing well enough for a visual check even with the exhaust removed unless it has failed so badly that the center rubber has come out. You can take a short crow bar and check for lateral movement.

 

[darkman]

Is that my best way to test for bushing wear buying a used one w/ 105k on it?

Check for lateral movement is the only way I know to check for a worn differential with the car on the rack if it otherwise passes a visual inspection.

If I were buying a used one w/ 105k on it I would assume it was going to need a front differential bushing, a transmission mount insert (Revshift), and at least one engine mount, unless: (1) the service record indicated these had been replaced more or less recently; (2) a good mechanic had put it a rack and inspected those components; or (3) the car when driven exhibited very little drive-line lag (clunk) other than from a dead stop particularly when moving the direction opposite of that used to bring it to a stop (i.e. stop while moving forward and then back-up from the stop-this maximizes the amount felt lag).

 

[darkman]

My UUC replacement, which still lives in my tool box, has an overall length of 2.360 inches.