This High Quality Rubber Floor Mat fits all 1941-1946 Chevrolet & GMC trucks with conventional cabs. For 1937-1940 Trucks, it requires trimming to fit. This replacement fits the original floor. The markings on the back side show where the holes can be added if you are creating an original truck with floor shift. Add your own holes if the truck is to be modified or use as is. Fits 3 or 4 speed transmissions. Replaces GM#'s 3681259, 3681271, 3681457. Dimensions: Width at Top: 41"; Width in Middle: 41-3/4"; Width at Bottom: 46-1/4"; Overall Height: 35-3/8".