409: Your C-VIN (confidential VIN as it is referred to by law enforcement) is on the drivers side rear frame rail, next to the fuel tank. It is on the top side of the rail, usually about 6 inches behind the body mount that is right behind the rear wheel. This number is stamped into the rail, right before the body and chassis are mated together on the line. Because it is stamped from above, you will have to use an inspection mirror between the trunk floor and the top surface of the frame rail to look for it. Make sure that the frame rail is spotless when viewing, because the number is usually very faint. The number will look like: 6K112095, for example. The model numbers will not be present, only the year (6) the manufacturing plant (K happens to be for Kansas, of course) all followed by the sequential serial number. Good luck finding that VIN.