Complete 1-Piece Floor Pan with Braces and Supports for 1961-1964 Chevrolet Impala, Impala SS, Bel Air, & Biscayne, 2-Door Hardtop & Convertible, 2 and 4-Door Sedan & wagon. This USA Made heavy gauge sheet metal floor is die formed from electro-galvanized steel, with all of the braces and supports welded on with spot welds. The floor pan does not include the floor pan underneath the rear seat or the rear seat brace.