From my research Revolution gear, USA Standard Gear, Yukon and Motive all make 5.13s for the dana 30. Also the pinion is the same as the one in a 4.88 gear set. the only thing that is different between the 2 is the ring gear. I have been doing plenty of reading and it seems like most of the people going with this gear set are 4cly jeep owners and they say its holding up fine. Id rather it not break but also want to test a product and put more information out there to better info other owners whether good or bad