Here are some pics of Paul's setup. He is CC member PaulProe here, PM him:
3x2Cobra
I am running this same setup and its essentially worthless. Why you ask? Because these cars build tremendous heat and have a lot of turbulence in the cockpit and you aren't going to be able to cool just the foot box area from an external air supply. You either knock down the heat via Larry's suggestions above or you can sell the car.