Gosh, this was my biggest surprise yet
I have been on the hunt for a decent locker for the AAR rear and there just does not seem to be anything out there yet, that surprised me. I have a fair amount of experience with various types of TADs and would have expected something available, but nope.
Just a little friendly advice, please be careful of locking the front, it really changes the character of how the vehicle behaves to turns, throttle input etc. A true locker in front will greatly amplify understeer when you are on the pedal.
Also, lockers in back give some feedback through the drivetrain, some love it, some don't. Neutral throttle in corners has some people wondering if their rear axle can take it (with all that ratcheting), no worries... it can, but you might notice a slight increase in tire wear (with that extra traction). Also, if your temps permit, running a thicker oil in the diff will help quiet the dog clutches in a true locking unit.
Off road, you simply wont believe where your truck can go with the back locked up. I have seen two wheel drives with a locker installed out-wheel 4 wheel drive pavement-princess-style trucks much to the dismay of their owners.
One word about the capabilities to handle torque, the Lock-Right that one can install themselves is just about dang near bullet proof. Some people just can't believe that such a small thing can be so tough. I had my own doubts when I decided to graduate to Class III modified mud drag. I consider that environment to just about be the most brutal and atagonistic environment for drivetrain, high rev clutch dump and bounce off the rev limiter to the end, grabbing traction variously from each tire with high wheel RPM, yep, bad news for weak components. I ran well over 600 nitrous fed big cube horses through that thing all day long, and then drove it home and then to work the next day. Inspecting often, I never ever found any signs of it giving out. For fun (yes I was younger then), I would do second-gear clutch dumps at 3000 on pavement and wheely my Jeep two feet off the ground, never not one issue.