My friend has this on his XJ. THe dimensions allow it to fit it on the H3 with different mounting brackets. We could also remove those weak quarter plastic pieces of junk with the 1/4" steel ends. I was just wanting to see if anyone else would be interested in this. With this option you could mount the swingarm tire carrier with mounts for 2 J-Cans and a high lift back there. It would keep heavy stuff like that off the top. THe rear departure angle would benefit as well. The hitch would be higher and out of the way.
http://www.durango4x4.com/xj_rear_bumper.html