Bit of nostalgia here, but many, many moons ago when we still ran Super Modifieds up here in this part of the world the tracks had a rule said you could run 4 barrels of carburation, but it had to be the engine manufacturer's carb....ie, no Holleys on chebbies.... We ran a pair of 2G Rochesters on a three deuce intake using the front and rear positions on the manifold.... Wasn't the best setup in the world but it would out run the guys with the 4GC Rochesters on a single 4 barrel manifold.....