I'd modify an intake to accept a Rochester 2 barrel for a 265 or 283 Chevy V8, or a similar Stromberg for a mid-1960s MOPAR 270 V8. The stroker GMC 270 I'm building will use an intake for a 302 military engine that has the same footprint as one of those carbs. I'll probably use a Stromberg for a 318 MOPAR V8 on that one.
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!