My thoughts, the only real low pressure area on a hood at speed is,in your case roughly about where the radiator cap is, not an easy area to vent, additionally, there likely is no high pressure area under the hood to begin with that needs extracting. At speed radiator airflow needs are somewhat reduced anyway, so blocking off some of the grille intake is a plus. 67charger is on the right path, for bang for buck, however his rear end now is going to get lighter by what ever increase in front end downforce he achieves, It never ends.

Last edited by jcc; 03/09/13 09:59 PM.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.