Specifically designed to fit 1963-1967 C2 Corvettes equipped with the 327ci small block engine and air conditioning, as well as 1965 C2 Corvettes equipped with the 396ci big block engine, this set of six nuts is essential for any restoration project. These high-quality, direct replacement nuts ensure that your battery access panel is properly secured, providing peace of mind and maintaining the original look of your Corvette. These battery access panel nuts are engineered to meet the exact specifications of the original GM 3728666 parts, offering a perfect fit and correct appearance. While rivets are not included, the installation process is straightforward, allowing you to quickly and easily restore your Corvette's battery access panel to its original factory state.