Fiberglass hood mods... crazy?

Sorry if I wasn't clear.. A spoiler WILL help the air get out.
I'm on a faster computer now so I can see your setup...
As for the induction setup.. why not just turn it upside down? so that it's pointing down and coming out in front of the radiator? if you did the spoiler with a intake "hole" you could have high pressure, cool air also. + a front spoiler will help with drag too, actually decreasing your CD.

I think if you want to evacuate the air out of the engine compartment you'll need to move the flaps forward. away from the high pressure cowl/lower windshield air. and if the boundary layer doesn't mess it up the Bernelle(I'm pretty sure this is spelled wrong) principle should raise them up for you.