on each side it has two 9/16 bolts, one on either side of the side support. the one in the rear goes through the frame, and the one in the front is tapped into the side 1/4 inch plate on the spring hanger. You can see the bolt holes in the 3rd pic on the left side. It also has 4 3/4" gr 8 bolts through the spring hanger. the bumper is welded to the the piece of angle iron (in the first pic) via more angle iron that runs along the inside edge of the diamondplate to the base of the bumper (if that makes any sense)
thanks for the kudos guys
