Well if you want to go crazy...
Detroit Truetrac (Its not a locker)
I'd think a clutch type Mopar diffy would be fine though. Lots of Ford guys going 10s on 31 spline stock Ford diffs (with C-clips no less). Mopar unit *looks* beefier, and is rebuildable
The trick is that everything else has to be right. You say you only want to spend money once, then you say you're going to wait to tear things up (again) before swapping to the good stuff. Shocks and springs are way cheaper than high dollar differentials.
If you don't wait to have terrible wheelhop you won't need an Ox diffierential.
My average 60 foot is 1.59 - 1.61 and I'm currently running a cone style Sure Grip.
