You are buying one 1967 1968 1969 1970 1971 1972 1973 1974 Corvette Chevelle SS Nova SS Impala SS Belair El Camino SS Nice Rally with the 4 original mounting screws GM # 3925805. I am not sure on all the exact years of usage or car line usage being this is a used part it is not perfect please be sure this dog dish rally cap is correct for your car before buying see photos no returns. The shipping cost include some of the ebay 20% charge,pay pal and handling costs .After you receive this Nova SS Impala SS part before you leave me a negative feedback please contact me so we can resolve the problem. Thank You.