What would you guys do?

[Chamberpains]

If you're worried about it then fix it so you're not. 3/4 of a million miles isn't a small amount of miles for any truck. If it's on your mind, get it done and over with so you can focus that energy elsewhere.

Roll the bearings in. Pull the oil pump and inspect it. Replace it if you have any doubts. At that many miles it's certainly not gonna hurt the truck to be freshened up.