I will post a pic next week. I have an original 55 1 that is a U Channel with a stiffener strip. Looks much different than the black one with cut out and L shapped in a previous response above. The unit I have is tough to find because few are removed with the carrier. Next spring when ready, I'm having a reproduction made for myself and one extra for a future truck. It's expensive but just like the Unison Seat brackets I had made, the bracket will be correct. My seat brackets were correct in every way including radii except but made from thicker gage. I plan on the exact gage for the stiffener.
