I installed the rear ARB locker on a cold snowy day. Everything went really smoothly except I didn't remove the ABS speed sensor before removing the axle shafts. I shredded one sensor and broke the other trying to remove it. I haven't had working ABS in a while... really not too concerned about the speed sensors.
Axle shaft pulled to remove 3rd member. Remove 4 axle bolts, brake caliper & speed sensor. The axle will slide out with little effort.
Speed Sensor 1
Speed Sensor 2
Tip: Use a jack after removing the 3rd member bolts to split the seal and make removal a breeze.
3rd member comparison
The lockers haven't been hooked into air yet and i'll be working on that this week. The re-gear to 4.56 is great so far. Better acceleration and the trans is able to stay within a better RPM range on the highway- no more up/down shifting when driving 70+ MPH.