Ted,

Just so you have your terminology correct. The cowl of a car is the area or panel at the base of the windshield it does not apply to all hood scoops. I am guessing you need a 4 inch scoop or raise in your hood. If you ask for a cowl, they may not understand what you mean. Chevy had cowl induction hoods on Vettes, Camaros and Chevelles, but they were referring to the intake location. Hope that helps.

Pat