Two observations, if I may:
1. If it's a high-speed car, I'd be VENTING the hood rather than adding a scoop.
2. Hot-rod fabricators are one thing, but a real racecar fabricator is better for a car that will actually race. There's one such guy in Santa Clarita: his stuff runs at the front, is spot-on out of the box, and I trust the guy with my life.