Hey HorribleHarry,
LSD in the rear wear out quickly off road. The standard ones give you only 70 ft-lb of torque to the other side. I wore mine out in 6 months. THe Rebuild LSD Kits are availabale from the stealer. They had kits for different levels of "wear" so yes you can (I did) beef up your LDS based upon the spring spacers you select, or something like that. I'm not sure I would recommend this for highway use.
You were talking about an expensive locker made in Austrailia. That is where the ARB is made too. <img src="/forums/images/graemlins/shocked.gif" alt="" />

The Toyota rear axle is almost a bolt on. You will need to weld on new spring perches. 8 years ago I swaped in an 8" Toy with a 4.56 ratio and a Detroit Soft Locker. I love it.
So now I have the Detroit in the rear and the LSD in the front. email me if you want specifics.
Bob Shaw
superchief87@adelphia.net

From everything I've heard & seen, an LSD will give you traction when you need it while still allowing you to turn more easily than a full locker. Yes a selectable locker like an ARB or Mitsu can also be turned off but it's usually safer to have an automatic solution where human error isn't a factor. Also, for those who have LSD's that don't like them on the trails, I suspect they have an improperly functioning unit. I've done quite a few hard core obstacles / trails with my LSD and my rig did fine with the dif locking up when it needed to. Didn't have to use the hand brake trick, etc. It just worked. <img src="/forums/images/graemlins/kewl.gif" alt="" />

IMHO the best solution would be a combo LSD/Locker like I hear one can do with the Gen III LSD's. <img src="/forums/images/graemlins/cheers.gif" alt="" />