Ok, thanks to those that replied with part #'s, I felt confident the local parts store would have what I needed, so I pulled the axleshaft out. One of the caps top is broken off, so you can see what the heedle bearings are supposed to ride on... My question is, what the heck are the caps that are OVER the u-joint? This is a spicer piece, it has c-clips which I took off, but these "caps" won't come off. They appear to be the caps of the u-joint, but not like the driveshaft joints... So are these "caps" actually part of the u-joint cap, or are they covers for the caps? I tried chiseling one off (didn't work lol) just to see if it would move. I read up on previous posts, mention was made of injected plastic and heat (no problem in that department) but there was no mention of these odd caps. Just want to make sure that applying heat to them will free up those caps, and that there isn't something trickier that needs done. Probably in my service manual, but going right over to the "shop" (dad has a press) after work here, and the shaft is already in the back of the truck...appreciate any and all help.