These 64-66 Mustang inner fender aprons are manufactured with updated tooling for added strength and a concours correct appearance. this inner fender apron features a heavier gauge steel, and a more concours appearance, making this an improvement over the economy version. They feature heavier gauge steel construct ion for superior torsional rigidity and durability. They also come equipped with inner front fender brackets welded in place to simplify installation. Finished in black paint. These concours grade fender aprons are stronger and have more authentic features than the economy versions.