I have a 2.0 and run the KH center diff support simply because I like the double bearings. And thanks for the info on th ering and pinion gears, in all reality I probably do not have to rebuild the diff's as everything is smooth, with no weird noise, I just want to get in them and make sure what it all looks like and so I can make sure exactly what oils are in them. Casper I haven't looked at the manuals yet as far as tear down and rebuild were does the grease go is the diff's are filed with oil?