Boot Seal: 55-56 Chev / Pontiac / Olds Full Size allThis boot seal is specifically designed for 1955 56 full size Chevrolet, Pontiac, and Oldsmobile 98 models. Alternatively unlike this solid seal originally used on 55 56 vehicles, the 1957 Chevrolet seal is hollow and includes pins, which can be removed for use on earlier models. While the 55 56 design is correct the 57 boot seal design offers a superior and easier to install seal compared to generic one size fits all options. Restorers of 55 56