Thanks for the in-depth response. I'm simply going through my project truck to get it put back together. I went through the rear end and filled the diff with fluid, but while waiting to put in the engine and tranny, I noticed a little fluid dripping from the front of the torque tube so I'm investigating, and yes there is a slight bit of play in the driveshaft. When pulling the brass bushing I tried probing to see if the outer bearing housing was still installed, but couldn't feel any lip. I'll have to look at it further and check dimensions.
