It can be found at the front of the dash on a metal plate, visible through the Is basically your vehicle's serial number. It is a 17-digit sequence of letters and numbers that VIN stands for Vehicle Identification Number. ** To decode the VIN of a 1973-1980 Ford truck, go here ** ** To decode the sticker in the door jamb (axle code, transmission code, etc.) Here is a little help on decoding that VIN. Note: This VIN decoder is a bit out-dated so if it doesn't work for your vehicle, It is primarily intended for 1981-newer Ford trucks but most likely also applies to other Ford models and years. This tech article was originally posted at.