Opps. Went for a drive today and no squeaky noise at all. It actually appears to ride a little smoother. Got it up to about 50mph and no shakes. I read somewhere that someone had shakes because the u-joints weren't centered. I didn't experience any problems.
It was relatively easy using the ball joint press rented from Advance Auto. I tried using a c-clamp and completely bent the hell out of it after about 2 minutes. The caps were pretty rusted and seized but some kroil penetrating oil and the press made it light work.
I thought for sure it was going to be harder but this actually went pretty smoothly, and now I won't have to worry about them again...w00t w00t!
The u-joints were most definitely original to the truck though, they had the ford logo and all the joints had wear marks of the needle bearings, one being completely dry and rusted.