I'm adding a lay down radiator and I'm thinking about building an airbox. This will allow the air to move out under the car cleaner. This, along with an airdam should help with cooling at speed. Has anyone done this on their car?
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The few that have, dump the air out thru the hood ala GT-40. There really isn't enough room to turn the volume of air you get in the space available, if you leave the front trunk intact. Most owners aren't willing to chop up a car this way, which also removes some of the front suspension bracing. Remember, most Panteras don't have a cooling problem at speeds from 25 mph to about 145. Below 25, the electric fans should blow 900-1000 cfm each to duplicate a 25 mph breeze. Above 145, the cooling problem is normally not the water but the oil heating up. Good luck & keep us posted.