I use a Kam Locker in the front of my Disco. 'tis bloody great! Just when you think your stuck, flick the switch and all of a sudden your on the way again!
theres an arguement over which is the best axle to fit a locker to, front or rear. Mine is on the front because I have more suspension movement in the rear axle (most landys do) therefore I am more likely to lose traction on the front. The problem is that I cannot use the locker with the steering too far off center as I may burst the CV joints.
Others put them in the rear axle on the basis that theres more movement in the rear so your morelikely to have both wheels on the ground at one time. the disadvantage with this is that you'll have no driuve to the front axle, the front diff will just allow the floatying wheel to spin.
Although I had a bit of a problem with the initial install of the Kam locker, I'd heartily recommend them. the guy that owns the company (Kevin) isn'y just an engineer, he's an off-roader too. Innovation through expectation not met is generally a good way to go. Once you price up the cost of the ARB locker, the compressor and the uprated halfshafts to take the additional strain, the KAM works out cheaper and because its electrically operated no-one knows when your using it! The other useful feature of the KAM diff is that it can be uprated to an LSD at some future point should you wish to do so.
