This profiled motor plate is designed to bolt between the water pump and the engine block and make installation and removal of the engine easier. It's sculpted shape allows more clearance for mounting dry sump pumps and steering shafts. The material is ¼" thick 6061-T6 aluminum, computer-machined to fit small block Chevrolet engines. It is shipped with a set of 4 mounting tabs and installation hardware. (34" wide at mounting points.)