I have a dilemma i was hoping someone could chime in. i have a 2001 4x4 xj stickshift i just replaced all 7 u joints with MOOG super strength joints except on the rear driveshaft where it connects to the slip yoke. Ok so rockauto, o-reilly, and autozone all told me that the ujoint was a different size than the rest. all were 280 u-joints except for the one connected to the slip yoke is a 270. well pulled it all apart and its a 280 as well. Am i missing something? ive searched and searched with no luck. does anyone else have 2 different size u joints on their cherokee??