Frames were not stamped until 1955 second series. The two number you have (engine and chassis) are all that were ever put on your truck. Have the DMV run both of those numbers.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD