Hmmmm. "Run as well..." That's hard to say. A single four will be less trouble, and probably make more power, but 3 Rochesters can be made to work with some fussing, and they do look cool! Remember that most driving is done on the center carb, so its like a single 2bbl. most of the time. We used to put a switch under the gas pedal and a solenoid on the outer carbs. Click-VOOM. All or nothing! A master switch disabled them when your Mom took the car for Bingo.