O man do i wish i had another 900 bucks to spend on a air locker! maybe next year i will do a front one. Anyone ever used any of those yukon zip air lockers? It looks like i can use a 4cyl carrier with v6 gears and a v6 housing without problems. But i think im just going to keep this 4cyl 529 third with the locker as a spare in my tool box just in case. I can pick up a 1620 lockrite lunch box style locker witch Ive used b4 for a v6 carrier for 250 bucks so i think im going to go that.