[joyridin']

I am doing it now. You need the Dana 44 carrier or you need to make spacers so you can put the Dana 3/8" bolts in the Jag posi. I just bought a Dana 19 spline posi. It was easier.

You also need to change the front bearing as the OD of the Dana pinion is smaller than the size of the Jag. Last, you need a coupler for the driveshaft for a 26 spline pinion. The Jag uses a 10 spline. Dana does not make these anymore, but Concours West has them for $95. If you want, you can use a yoke, but you might have to lengthen/shorten the driveshaft.

I believe Yukon makes gears for a Jag rear with the 7/16" ring gear bolts. I believe I saw them on Randy's Ring and Pinion web site. They were about $300.

What are you trying to do? Just change the gear ratio?