To ansewer your questions no way my dad is a judge or lawyer he thinks that it's cool that I'm restoring a car. So Benny240 if there is air getting trapped and no where for it to go how much are vents to install on your hood next to your windshield?

I think what Rob is trying to say is where is the money coming from at age 12 to restore a Z??? Hell you can't even drive yet

However your doing it, more power to you. It's just unusual to see a yung fellow your age doing a restoration with no financial help. The Z, like any hobby is not cheap.

I have heard rumours that there is high pressure (not a strong one) developed at the base of the windscreen, which is why reverse (backwards facing) bonnet scoops work OK. The air is still forced into there to some degree. The air would move fast over the front of the bonnet causing lift to a small degree, but the main lift would be from air squeezing under the lower valence panel on the front. The airdam changes this and funnels it up into the radiatod instead of inder the car.