Oh boy nobody mention the Ford 9" or the GM transmissions or there will be a brawl .
I like the factory scoops they suit the cars . I was able to fit my tunnel rams underneath them with a little as a 1 " lift on the design.
Its pretty tough to put on a pro-stock style scoop and not have it overpower the lines of the car.
There are to many different combinations to dismiss any one hood scoop .Cowls look good on some cars and bad on others and vice versa for the pro-stock style hoods.

Plop any thing you want on your hood its yours.