selectable locker vs limited slip

[TJVigilante]

Most breakages of Detroits I read about are from the shaft exploding inside the locker, but not caused solely by the locker itself.

In a short wheelbase rig which you don't have, automatic lockers can get really squirrely especially in low-traction highway situations (ice, hydroplaning water, gravel roads) where there's fast changes to high traction areas...quick locking and unlocking from getting on and off the gas can cause the vehicle to lurch if the driver isn't accustomed to the locker. I have a lunchbox locker in the back of my jeep which works essentially the same as a full case locker (detroit) but fits inside the factory carrier...and while it took some getting used to, I barely notice it's there any more.

You might want to look into getting a lock-rite or Aussie locker to just replace your factory spider gears as the most economical way to lock your axle, as it doesn't require a gear setup or backlash measurements. I have an aussie and I'm trusting it more than the rest of the entire axle. the lock-right I think has a tire size maximum of 33 or 35" diameter, the aussie has no maximum limit, but I wouldn't go more than a 35" tire behind a V8 or strong 6 cylinder with it.