Still would be interesting especially if the date code was very close to the end of production or very near the SPD. IMO there would be no way to have a very late date code or one that was after the actual production date. The date code regardless would be days, weeks or even months BEFORE the actual production date not AFTER. The K-frame date code was probably the last hand or machine stamped date put on a part of a Chrysler closest to final assembly..........or is there some other permanent date somewhere else (decals, documents and paperwork don't count in this instance )

Mike