Ok first off I know I have a WK and not an XK and I know that clearances are more stringent! Besides folding over the pinch weld and smashing the piss out of it, have you thought about using a longer bump stop to limit you up travel? Once you clear the rear of the well out, your fender while stuffing the tire will be your next concern. In the rear you can fold the lip of the fender and extend your bump stops to keep your tire from rubbing at full stuff. I know you guys have these crazy ac lines that we don't so I am not sure how those come into play. I just thought I would through some ideas out there, because I have done similar things to mine

Also, maybe I am thinking of the wrong XK, but the white one with a 2" lift that I know about had 34s (285/75 R17) I thought?