I'd just spend it how ever Brandon tells you too. anyone with a 83 like his knows what he's doing! 
the thing to remember is it will be a DD and he is fairly new to wheelin, might want to start without a locker just to get to know the characteristics of a lifted yota first. He could buy that runner, pull the detroit from the rear and put in an arb. I dunno..
Cuz, i had a "auborn" locker in my 89 chevy... ( mudd bogg days ) it pretty much made it posi right?
that's not a locker, that's a limited slip - different
he he, wait till you drive it you'll see..
It is the difference between something that slips like a clutch and somethat that ratchets and hooks up 100% if that makes any sense..
From what I have seen limited slips are basically useless - you will go further in 2wd than you would believe with the locker (tires in the air and still goin..)
