GM engineers figured out that the stovebolt engine needed a single 1-barrel carb. They made millions of them that way, and they worked well. Their only mistake was thinking they could build a better carburetor than Carter. Use the right sized Carter carb, bolt it on, and drive. Putting two or three carbs on where one is all that's needed is an exercise in futility or stupidity- - - -take your choice!
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!