scotch
+1y
I would expect install a repair sleeve also!
I'd replace the pilot bearing while you have the tranny off. Unless you expect to have the tranny off or the engine out in the near future, $15 bucks is cheap insurance to prevent having to go back in.
Also, without knowing the history on your truck... and just guessing the engine and tranny are original, if you are going to go through that much work to get to the rear main, I would anticipate finding the input shaft seal on the tranny leaking as well. So I'd be prepared pull the tranny out completely and do that seal as well. Might need a repair sleeve too.
So if you want to keep your down time minimal, I would have those parts standing by ready to install. If you decide you don't need them, then you can always return them. Chances are they will be a day or two away from your local parts store. Not good if you pull everything apart on Saturday morning hoping to drive it that night, and then Saturday afternoon the parts store says "we can have on Tuesday." If you're not in a hurry, then you can always just order them after you get it out.