first you need to determine what axle you have and that thread will help you with axle identification.
As a shortcut, I'll give you an answer. I think you probably have the H190 . this is what I can find for your axle. Add to this $300 or so for installation and you have a lot of money tied up in a turd axle.
https://www.4x4parts.com/catal...d=301
You'd be better off swapping a toyota rear under the truck if you're stuck on a limited slip. There's gobs more aftermarket out ther for the Toy 8: axle, and it's stronger than what you have. Nissan V6 4x4 truck axles can be found with them, but they're wider and they will push tires out past the fenders.