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This 1/8th" thick piece from my junk pile already had a tight bend and will be used on the rear face of the bumper to strengthen the receiver, it measures 8½" x 4½" x 3-3/8"
Passenger side of the bumper has a light weight 2" receiver as a stabilizer for the crane vertical post, a smaller post that holds the winch and boom slips inside and transfers the weight into the ground and not into the truck, this also allows the truck to move up or down as weight is added or removed.
These 1/8th" wall thickness telescoping posts are called Telespar, they come with or without 7/16" holes spaced 1 inch apart, I found a pile of these at a salvage yard and grabbed them, the three sizes pictured are 1¾" O.D. 2" O.D and 2¼" O.D. if you want strength without too much weight these work great.
Cut and folded the rim edge over for more bolting area. Bolted a ½" thick x 2½" x 10" long steel plate to the rim. this can be unbolted for servicing the hub bearings.