Ed, it wouldn't do for us to get together; we'd have to do some SERIOUS bench racing!!!
I don't know about 1956, but John Zink won the Top Stock honors at Oklahoma City in 1957 with his '57 Pontiac Chieftan 2-door sedan, sporting three two barrels on a 317HP, solid-lifter 347" motor. Ran 94mph through the mufflers on street tires with the air cleaner on... lol! That was flyin' back then!
I've always wondered why a supercharged '57 Ford didn't win that; they were WAY fast.... so fast, that NASCAR banned them, along with the '57 F.I. Chevys. A properly-prepped Torqueflite '57 Dodge D-500 would have been fast, too; it had the '56 Chrysler 354-cubic inch, "300B" motor with 2 4bbls... rated up to 355 HP in '56 with the optional (10:1) high compression pistons.
Lots of stuff goin' on back then that I didn't find out about 'til later.