IF that truck was born a 6400 it would have had a 161" WB. The shortest 6000 Series built in 1951 would have been the 6100 at 137"...I believe this is a cut down frame, not factory built.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD