I'm looking to replace the axle u joint on my 2010 JKU Sahara and I am finding conflicting information on which to order. The Spicer 5-760X appears to be the one I would need, but the parts suppliers websites list that as only being used up the TJ. I also found a thread stating that the axle was upgraded at some point on the JK's and that dealer won't replace u joints, they will make you upgrade the axles. A $20 u joint vs a $275 axle shaft? I'll take the u joint please... I just need to know the correct one.