I'm thinking the air getting under the car at speeds is doing the lifting, not the hood.
That being said I would put a front spoiler on the car to help eliminate any air getting under it like the 1970 Dodge T/A Challenger had scope
I had one of those cars back in the day and I don't remember the front end getting light above 100 MPH shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)