http://ecomodder.com/forum/showthrea...s-my-3619.html
^^
My 1990 Firebird employs that exact method.
(fog light holes, not air intakes)
You could use an air extracter like the newer Porsche 911's do, in their "hood" to pull air out after is passes the radiator:
I think it would be interesting to test on other cars. The thing is, you absolutly have to make it very sturdy. Like I said in my thread, the F-Body cars (Camaro and Firebird), and the Vettes will over heat if they loose the air dam. While maybe the C6 isn't as effected.. I know the C4 and C5 vettes relied on the air dam. Along with the late 70s F-bodies, and then the 3rd and 4th gen ones.
So maybe make the grille block removable incase you were to loose your DIY air dam on a drive way or something. My firebird's air dam scrapes just about every driveway known to man, lol.