Ditto on the two dummy carbs on the ends. Make an airtight plug that fits the manifold under both outer carbs, go ahead and rig convincing-looking throttle linkage on all three, and run fake fuel lines to the outboard carbs. You will impress the tire kickers at the car show, and you won't burn down your ride from flooding and backfires caused by over-carbureting the engine.
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!