I need to replace bearings and want to know how much it should cost and if I should do any other mods while we're there.
Any help would be appreciated.

 

Are you replacing axle bearings? Those should not be too bad. But if you are talking about rebuilding the rear end, I would like to know myself. Gears would be a good upgrade while your in there, and the only tricky part about that, I believe, is shimming correctly. Can anyone else elaborate?