My plans are as follows, to direct air into the front with aluminum ducting as has been done on here. Have the cold air enter in at the naca duct front, and hot out at the rear section (idling at lights) of the naca duct/louvered inspection lids and lastly cut dimple die holes in the rear fr fenders and apply metal ducting/tunnel to the side vents. Hopefully the hot, high pressure air will flow somewhat freely out the side holes and vents, or I will resort to adding small pusher fans for added flow as Bartman has done.
http://forums.hybridz.org/topic/95218-functional-fender-venting/?hl=fender+venting