So I have a suspension lift, and a couple days ago I installed a glasspack. In the process my exhaust hanger/mount thing broke.. I had to get it out of the driveway that day so I drove it to my house with the exhaust bouncing.. Wellll, the exhaust hit the rubber on my shock and melted it a bit, now my Jeep is on an angle towards that tire (rear passenger). I'm just wondering what all could have caused that.. And I am drilling in a new exhaust hanger tomorrow to get that taken care of. :P

 

The two events should not matter towards the lift because the shocks does not add or subtract lift. make sure you are park absolutely evenly.
What lift did you put on? Pics in the mornining?

 

X 2 on ensuring your Jeep is parked on perfectly flat ground. Also if you XJ has ever been in an accident the unibody frame thing will cause your Jeep to sit funny and a lift will just amplify any imperfections in the how straight or bent your frame might be.