(489) 3.23:1 to 3.55:1

The biggest headache will be setting pinion depth in my opinion. I used "hollowed out" inner & outer pinion bearings that would slide on & off while I swapped out shims to get the right pinion depth. I used the bearings that came off the pinion & used a stone on a drill to "hollow" them out. Otherwise you'd be pressing the bearings on & off. The good thing is, setting ring gear backlash is a breeze due to the side adjusters. You can do it, just takes a lot of patience. I built a 9.25 axle in my Duster & setting it up is similar. I'd suggest you get a service manual for a vehicle with the 8.75 axle. If you know someone who works at a shop that has All Data, they may be able to print the procedure for you if All Data goes back to at least '72 when Dodge trucks still had that axle. That was my reference years ago. Good luck!