but if you don`t,, or forget to,, fill the box with cool ,,,, ? .,,, wont it then do the opposite and warm the fuel because of the underhood temps? I see your theory though,,, our MR2s have a side vent with a small fan down the tunnel for cooling underhood temps but they also have alot of perforations in the hood to let the air back out though.
Maybe what you need is a summer hood with (( TASTEFUL )) scoops and, or vents and a not summer hood.
Again,,, notice the word tasteful