[Sammus]

dont bother buying any new parts yet till your old ones break, they probably never will. I've never heard of anyone damaging any diff gears except the diff pinion gear, so wait to see if it brakes before getting new ones. If you do go the LST diff route, you will only need the ring and pinion because they are helical cut - so if you just get the pinion it wont mesh probably with the ring gear you have (I think, most of them arent helical). What you link is the entire diff, you dont need all of it.