much more air is shoved thru the grill of these brick cars than passes over the hood. Most of the old SS cars used the headlight bucket to direct the air into the carb(s) I plan on something similar on my 70 by flipping up one headlight door and jamming all that air into the carb(s) probably gona run a 6-pack. Reguardless it will be better than all the hot air stuck under the hood.