sope said:
They break 10 bolt axles and U joints...
That's simply not good advice. Lockers don't break anything. The right foot does

(And I thought the Garage wasn't supposed to be the 'For Sale' forum

- edit: Rene, you're really good

).
I'm running an ARB in my 10-bolt front (with not-quite 35" MTRs) for some 2 1/2 years now, and I've finally incurred damage in the form of a U-joint caps that decided to proceed on its own (I'm not posting a picture since you can look it up in the February issue of Offroad Magazine...

). Like others, I carry a set of spare shaft assemblies - inconvenient to swap one in, but not such a big deal after all. There's been many a trail with no problems from the front end (including Pritchett Canyon in Moab), and after all the U-joints appeared to be the originals from '85 (I couLd probably have prevented the breakage with preemptive maintenance and new U-joints, but I was on the 'If-it-ain't-broke-don't-fix-it' trip, and I was busy at the time building my wife's truck

...).
A lot of your decision depends on $$, how you actually use your truck, and what trails and obstacles you want to run. 37" tires appear to be the max for 1/2 ton axles, if you decide to go for a locker, I'd go for a selectable one because it gives you a choice: you can actually decide whether you want to lock it up front on that high-traction off-camber rocky ledge, one tire bound up, and the steering wheel turned all the way to the right,

- it'll be a good show for everyone for a short moment...or whether you may want to choose another line to keep your front axle alive. If you don't want to think about this and simply hammer it with your 37s, don't bother locking your 1/2 ton front, get a 1-ton axle. If you do that, be prepared to spend a bunch of $$, because you'll need to buy the axle, go over it (i.e. bearings, seals, and brakes - and all the D60 front's Ive seen lately in the 'I've got a D60'-posts needed all new brakes, badly), and then you're still open in the front and you need to buy a front locker.
Anyways, just as a disclaimer, my personal philosophy is " 'wheel it NOW and have fun" and not "build it right the first time, and maybe 'wheel in three years when it's finally off the jack stands and you can actually afford the money for gas again, but now the new family won't like it or the divorce got in the way and the truck is for sale someone please buy my stuff".
