This is the sheetmetal bodymount reinforcement that installs on the floorpan, rear, where the floorpan meets the trunk area. It measures 8.25" x 4.5"x 2.5" and it has the body mount bolt nut welded to it. It adds strength to the rear floor where the body mount installs. Danchuk # 16110 will work on the passenger side of any 1955-1957 classic Chevy hardtop, sedan or wagon. See Danchuk # 1791 for convertible applications.
Danchuk has the largest selection of quality 55, 56, 57 parts for your classic Chevy project.