The wheel hop can indeed have to do with the rear axle, or the shocks, or the driveline. Shocks and driveline were done and it was still doing it. The good old wheel hoppy shake feeling when rolling on the gas 35-40 mph. I think the old LSD clutches which were bare metal at this point were chattering or something.

The 45+ vib was much more recent and was reduced to a small vib at 60-65 now that's only audible after the rebuild. I have one bearing in the front that hasn't been changed yet as well as possible slight cupping of front tires

I will also put the back in the air this weekend and run it up to see if I hear it. If I hear it then maybe it is something with the xfer case...

Edit: I have manual hubs installed in the front, therefore the front driveline and axle are not a player in this vib that's left.