In reference to the cold air box and the hole by the radiator- It was suggested that the vortex created at the front of the car, can be beneficial for cold air intake(rally car type) and work like a ram- the spot is actually on the right of the radiator, so no hot air. Again I guess the wheel spin creates a vacuum effect thus influencing air flow where the stock set up is- just what I was told by a guy who did Granpa Bob's stuff and I was very impressed with his knowledge and skills, he also build pro rally cars which I saw him working on that made me value what he was spittin-