Sorry to ask a question I should be able to figure out for myself, but could someone help me decode my engine number? My car is a 1976 911S and, like most 76's, the engine has been replaced. the number is *6462159. I know the first and third numbers are correct for a 76 S, but I'm seeing tables that say the "4" is a Carrera engine and others that don't list the "4" at all. Any help would be appreciated.