Dodge Nitro diff??

The rear disc setup will direct bolt onto an a A body 8.25 or 8&3/4 rear. I'd at least keep that from it. I believe the limited slip and ring and pinion will swap to an A body 8.25. I'd pull the complete rear and keep it to rob parts out of it.
I bet there are a few threads here about that. I remember seeing rear disc bolt on's from late model rears.