Still a work in progress, but it's almost there.

Oddly all the U joints appeared to be original except the rear axle...It had a grease fitting.
Guess which one was trashed and causing a nasty vibration? The one with a grease fitting.

I notice the OE U joints all had green clips....Spicer has copper plated clips that turn green.
I replaced with a non-greaseable $picer in keeping with the rest of them on the truck.
Old timers might not agree with that decision and I used to be in that camp also.............but working on late models
has changed my viewpoint of that.