Hmm,the locker in my trucks front axle doesnt do so well on pavement. It needs a slippery surface or the tires howl around corners. Im thinking a locker would be fine if there were some means of disengaging it for normal cruising /driving,like in my truck. Maybe an air locker?
If your 8 3/4 blew up Im thinking it was pretty tired already.Hardly ever hear about a failure.