I think the front retainers a pretty easy replacement. It's just those four bolts comes off and you can put a new one on. The front shaft should have a little play in it also input shaft that is. It's only $100 for the rebuild kit and let's just bearings and seals. It's pretty much a no-brainer to rebuild there's no tolerances and you can't get it wrong, almost. If you're planning on taking it out and putting it in then you've done all the grunt work. Don't give away the easy work to somebody to throw it on their bench and replace the bearings.
