I already knew what those numbers mentioned ment, (W=6400, 255= 2nd series 1955, S St. Louis assembly plant,) But part of what I wanted to know was what number it was to come off the line. Thank you for clearing that up for me. And to answer your question, it is, and always has been, a TX truck. I got this number from the silver plate inside the truck that was infront of the driver side door window towards the front end. Do I need the engine number to find out? Where on the engine is this number? How many of these 6400's were made that year?
