The idea of functional air scoops is a great idea. I enjoy looking at the efforts of brave pioneers that plug in the saws all and go to work.
If you wanted a really top quality look, try this....Take the car to a body shop...have them take the hood off so you can keep the car and drive it while they work on it. Have the body men put body filler or resin around the base of each scoop. Have them feather it out so you cannot see the seam between the scoop and the hood. Have the whole thing stripped, primed and repainted. The result would amaze you. It would look just like it came like that from the factory. While you were there, make sure they remove as much hood material as possible under the scoops to make the hood lighter.
Shouldn't take a shop more than a couple of days to do this for you....and you'd really be happy with the results.