I have a JL vantage box for sale. I had it in my Cherokee for 5 years and it worked great. Sold the XJ a couple years ago and am just now getting around to selling this thing. It is held in with a lag screw through the wheel well. The previous owner of the box drilled a small (1/8") hole in the back to attach it to the plastic trim as well. Asking $125 shipped. I will throw the sub that is installed in it (Audiobahn 10") for free if you want to pay an extra $5 for the shipping. adam.matzner at gmail dot com.