I have an 87 Jimmy Fullsize 4x4 that started making a real sound popping sound when I would turn going slow in the rear. I drain the rear differential and found broken teeth on the gear inside the carrier. I believe my vehicle has the gov lock type carrier and is a 10 bolt pan. Do I need to replace just the carrier or the carrier and the ring and pinion. But I thought ring and pinion was outside of carrier. Please help. To add to this drama I have a 4" lift with 35's and the gears are factory 3:42 in both front and rear. Should I change to 4:56 and replace carrier and if so about how much.