A westy roof on a xj would be kind of nice, give you extra room to set up the xj for sleepin in, but I will stick to my hippie hauler for camping ,nothing like getting 20 mpg and being able to sleep 4 (well 4 if the couples are really friendly lol)
I would be very interested in seeing pictures on the monstrosity, wouldn't be worth a damn as a wheeler with that departure angle, but still would be kind of neat as a camping rig if it was set up right.
not my thing but some people are into odd stuff like that.