This product is an original General Motors dual quad carburetor progressive linkage designed for 1956-1961 Chevy and Corvette vehicles. Made of steel and with a vintage part status, it features a 2 x 4 carb linkage type and is an interchange part for various Chevy and Corvette models. The part number is 3731410, and it is a performance part that ensures OE/OEM quality standards. This product is a genuine GM part from the United States, offering a reliable and authentic solution for restoring or upgrading vintage vehicles. #6817MATT