Apparently I'm retarded, lets try it again.

this is how about all of the companys will mount them. they mount with 8 bolts to the rear and then they mount to the unibody with the lower bracket. you can built some legs that mount to the frame off of the side legs that way it will mount to the unibody 4 times not just the two.

um i don't have this bumper i went here http://www.ajsoffroadarmor.com/XJ_ST_Rear_Bumpers.html
and i got the pic.