My bet is the date is Dec 6, 1956 as the "A" code wasn't used on a 6-cylinder during the 1956 model year, but was in '57.

I also can't help with the "special" casting...

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
+++++
Silver Spring, MD