help with mounting scoop

i have a 73 duster i am going to put on after market hood scoop on, my hood doesnt have any cutouts or holes drilled for scoop,before i mount do i have to cutout a little hole in hood to give a little relife to scoop so it isnt trying to catch all the air and blow off or just dont put any cutouts in hood, thanks by the way it is dual snorkel
Author: admin