removed and re-installed everything today. Heres a stumper:
my propshaft has alignment marks from the factory. I installed it with these marks aligned an the vibration was MUCH worse, basically unbearable.

Re-installed with the marks I made on it before initial disassembly and now I just have a mild vibration from 45-60 mph depending on throttle position.

I check the propshaft and it doesn't look like any of the weights fell off while I was working on it.

I'm planning on installing the new front flex disc ( only removed the rear section) and a new carrier bushing this weekend. In addition to the vibration I think the new bearing is making a groaning/ howling noise.