agreed....why not just go to your local subaru dealership and purchase either a wrx or sti hood scoop (they can be removed from the hood ya know) and have your local body shop mold that in for you? this seems gto be the look that you are going for anyways. why try to redesign the wheel?
no offense, but i wish that the whole idea of a hood scoop on a contour/mystique hood would go away. i have yet to see one that actually flows with the lines of the car very well. matter of fact, stilov's is about the best that i have seen just because it is small, discreet, and it actually serves a purpose.
as far as getting hot air out of the engine compartment, i would venture to say that simply removing the rubber cowl to hood gasket and placing some washers under the hood brackets to create a little rake would be more effective than most of the ideas i have seen. matter of fact i seem to recall that demon has done exactly that?
