The axle spline count changed from 27 spline to 29 spline sometime in the late '90s.
The carrier bearings' outer diameter changed sometime during the life of the 8.25 (I want to think mid/late '80s?). The early bearings can be used on a later carrier.
So, here's what you need to find-
(SureGrip) carrier and gears (don't forget to pull the pinion gear and any spacers used) of the proper gear range, up to the mid/late '90s from any of the following (there may be others) with an 8.25:
A/B body Mopars
Early Dakotas
Light duty pickups and vans
Jeep Cherokees (Make sure it's an 8.25- Jeep Cherokees also used other diffs like the Dana 30, 35, and 40; and the AMC 35 that can easily be mistaken for a Chrysler 8.25)
And as a side note, if it comes out of a Mopar, grab the speedometer drive gear and housing out of the transmission while you're at it- then your speedo will read correctly, depending on tire size...