BG is a 1942-46 235 engine serial number prefix code, it was made in the Flint Engine Plant and was available as an option for the 1-ton and larger trucks only.
What's the serial number on the cab?
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD