The original equipment Rochester 2 barrel would be the logical choice. That's probably the best carb Rochester ever built, at least until they came up with the Quadrajet. "Anything but a Holley" would be the operative term here. The small bore Rochesters used on the 283's and early 327's would be a close match, and parts and rebuild kits are available at any local auto parts store.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!