I have two Torsen's... One is in the car, the other is a spare. They are the early Gleason version, and I have heard that they have limits. So far they have held up very well. Charlie has a good point that they dont work well with no load on one wheel. The upside is with an auto I can get some decent preloading the brakes.

That said, I'm not an extreme wheeler or I would have a locker.

As far as adding preload to the stock Montero Gen 1 LSD It's easy to go too far. The factory apparently felt they did when they issued a TSB to loosen the LSD up.

The LSD units are very easy to tweak. Having a spare unit for parts helps as well.

Kevin