[Marty l]

Thanks for the reply... I was referring to the bushings seated in the diff housing
I will be using urethane bushings on all the other control arm spots in the rear except for the upper 2 on the differential mounting points witch hopefully will work well and not be to harsh.

Part# E4SZ-5A is what I was told by a dealer is the best to use. They said stay away from the poly type in the upper diff position and had the below statement on there page.

Never replace rear upper control arm bushings with urethane, due to induced binding, and resulting chassis damage.
Upper control arms must rotate and pivot with axle motion, and rubber is the only material that sufficiently allows for this twisting without chassis damage.

Thanks for your info.. It is all to fun figuring all this stuff out..........

Marty