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I am getting ready to install a pair of Yukon Hardcore Extreme U Joints into some new Chrome Moly axle shafts in my Jeep TJ rock crawler and the U Joints don't have needle bearings, they use a 4140 steel cap that ride on the 4340 chrome moly body. Yukon recommends copper anti sieze for...

I am in the process of swapping a Cummins crate engine R2.8 diesel into my 1997 Jeep Wrangler TJ. The AX15 has a torque rating of 300 ft lbs, the little Cummins puts out 310, so it's close, but I want as much protection for the gears in the transmission, especially 5th gear due to the torque and...