I've got Yukons in my '02 4x4. 8.8 diffs front and rear 4.10:1 ratio. Other than the price, no complaints. They have given me little trouble in 30,000 miles of use so far. They make a little noise now due on my part for not refilling the diff back up all the way when I changed the fluid out
WARNING: keep away from
during things like that. Wait untill you are finished.
I installed them to get some towing performance out of my 4.6 powered truck.