Depends on which locker or limited slip you want. And also what rear end you have. Do you want limited slip or a locker? Are you aware of the differances? Stumpuller has not been around in awhile, he is probably your best go to guy on that, although there are some others with good info too. I know a bit, but I know there are others that know more and have had more experience at it. If it were me, I'd choose to go for the locker instead of the limited slip. Although, lockers can be much nosier, and a bit uncomfortable on turns at times, but I think its still worth it. And if you feel you need a locking differntail for a purpose then go with something you know will be locked up when you need it to be, and not have to wait for some slipping to happen to first.