This fuel-car-style mid plate is designed to bolt between the engine block and the bell housing. It is tall enough to fit in a typical fuel car chassis. Mid plates must be used with a motor plate to complete your engine installation. This mid plate must be cut to fit the chassis and mounts onto the chassis of tube frame cars. The material is ¼" thick 6061-T6 aluminum, computer machined to fits big block and small block Chevrolet engine blocks.