Carburetor scoops do they make a difference?

My car is getting built as I speak at a shop right now, and I'm debating if I should cut my hood and get a carburetor scoop, does it make a difference in performance ? Does it really give the carburetor more air forced down to the intake ? Or is it mostly just for looks ?
if you have a stock motor forcing more air in the carburetor will only make the motor burn more gas to make up for the air to gas ratio in your brain box, you might get 1 to 2 hp but your going to pay in the gas price at the pump ,the gas is doing all the work not the air, i use a MANUALLY OPERATED
scoop and hood louvers to get some cold air in and hot air out of the engine bay, with headers it get a little hotter then the stock manifolds, lets say a lot of work from cam to Performance intake manifold a 4 barrel carburetor to a supercharger. thats how it works not with a scoop only,,