If positioned in the right spot, it could look really good. I would suggest cutting a few pieces of cardboard the the size and shape of the louvers, and laying them out on the hood where you think you'd like to mount them and take pictures. That way, you can compare all possible mounting locations side-by-side and make a final decision on where you think the best looking location is.
It's actually kind of funny that you bring this up, because I've been thinking of doing something similar with my hood due to the lack of selection for the 04+. I was thinking about using these Camaro scoops and making them functional heat extractors.
