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Non Rubi 4 Door
Front
Reverse rotation 30, thick cut, with a short pinion.
Superior is offering gears.

Front locker
Any full case locker for the d30 should work. You will need a 3.54 and down case because of the thick gears. Superior ring gears use 7/16 bolts and most full d30 lockers are already drilled for that that I am aware of.

Rear
Standard rotation 44, thick cut, unsure on pinion length.
Superior is offering gears.

Rear locker
Any full case locker for the d44 should work. You will need a 3.73 and down case because of the thick gears. Jeep switched to 1/2" ring gear bolts (from 7/16") a few months into production (overseas diesel protos were shearing bolts) Superior ring gears are dual tapped for both bolts. Most full d44 lockers that I am aware of use 7/16" bolts. Superior includes both bolt sizes in their master install kits. So you can run the 7/16, or drill the carrier out to 1/2" (I would)

Hope that helps someone. If anyone know about the rears in the 2 doors, or the rubis let me know. It looks like Yukon is making JK rubi gears.
 
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