I would really like to mount the old fashioned gun rack like in the back window of your pickup type on the side window opposite the spare in my XJ. The problem is the recessed window well and the cheap plastic to screw it to. I guess you could use the space behind the rack for some sort of storage system. I see drawbacks for my use in the two examples presented. I keep my back seat down for the dogs most of the time & the overhead rack, not sure how you would screw that thing to the XJ roof but it looks like a pain to get to. I think I'm gonna look closer at some sort of side window system. I was really hoping someone would hop on here and show me one they did.