From the info on the add and a little searching, I believe it's an EAG bumper for an 07-18 JK sold on Amazon. It looks like the attached picture but the guy didn't have the tire carrier for it. Didn't matter much to me since I had the move the pivot to the drivers side to match the door swing. As for mounting, I cut the brackets on the bumper down, cut the trailer hitch cross bar out and raised it to the level where the bumper would be. I cut off the stock trailer hitch mount off the cross bar since the bumper already has one. Plated the driver's side and ran additional support to carry the weight of the tire carrier. I made some cardboard templates for how I wanted the sides to finish
That is quite the bumper. Which brand is it, and how fabricating did you have to do to get it to mount up.
Did you take any pictures? Mount it at the hitch mount points?