Heat extractor hood

[vette427-sbc]

Thanks Bryce... Im thinking I should have a gurney flap on there too (Ive been calling it a wicker).
As far as the exit duct, Ive been reading that it shouldnt be the same size as the inlet. The air flow is turned into low speed, high volume after going through the radiator. Im thinking that it would be more aero-friendly if the airspeed coming out of the extractor duct was not so drastically different from the airspeed going over the hood. I think the higher airspeed and smaller duct opening will help combat the high pressure zone I am hoping to avoid too. The only technical aero experience I have is the fact that I just finished the aero chapter in my Tune To Win book, so please correct me if my thinking is wrong.