So in my other thread about potential CV joint noise (http://www.explorerforum.com/forums/showthread.php?t=310935), I have determined that one of the mounts for my front differential has a bad bushing that is causing the front diff to tilt down a bit on the driver's side. I'm planning to replace the bushing and get the front diff mounting squared back away to level. In the event that my front diff has been damaged, does anyone have any thoughts on the following: 1. The first place I'll look is a salvage yard for a front diff. 2. If I can't find one, I'm looking at a rebuild. Can anyone help me with some guidance on what it takes to do this job? 3. Are there special tools required? 4. Is there some type of special experience that is absolutely critical to where I should let a shop do this instead of trying to do it myself? 5. I'm a pretty handy guy but I'm no master mechanic. I have a relatively basic set of tools but I'm pretty good at fixing most anything with a little guidance here and there. Should I give a rebuild a shot or should I just leave this one to a mechanic? Thanks!