ok i just wanted to know if the superior axle super 35 kit will work on my xj even tho it says its made for a yj. and i wanted to know if my front shafts run a quick disconnect or have a threaded outer?
As for the Super 35 kit, depends on what year your XJ is and what year the S35 is for.
The other question, I'm guessing you're talking about the vacuum disconnect on the front axle? Check the pass. side axletube for cast housing with vacuum lines leading to it.
Tell us a little more about your jeep. Mods? Year?