Have wondered about this for awhile but never thought to ask until I saw the previous post; With the old caution about not using too big of a carb, or use a formula to estimate what size carb you need, why did some muscle cars come from the factory with multiple carbs totaling 1000 cfm or more? I realize the secondary carbs are usually vacuum operated, but why so much cfm potential on stock or mildly modified street cars? Thanks.