ok check it out... so your vents are now functional... ok so follow me here. create a bracket in the back of your engine bay to hold the cooler right under the hole for cooling... now that you have a bracket there holding it in place fabricate a shield to keep it even cooler from the heat trying to escape near the cooler... no sense in putting it under the cold air when the hot air is rising up to it... see what i'm saying?

ok find a place in your engine bay RIGHT UNDER THE HOLE, fab a bracket to hold the cooler into place... now that you've done that the air from outside is coming through your hood ONTO the cooler... (making it perfectly functional by recieving cold rushing air) now, create a sheild so that the heat do not reach the cooler... nah mean?