I have a 818C and I am finding after long drives I get little to no air flow down in the foot well other than hot air from the rad, I am going to work on sealing things up.

I am wondering what people have done for tubing and vents you can close off or open to let cooler front air into the floor of the drivers and passanger area?

I was thinking 2 fresh air tubes from the front bumper to the driver and passanger footwell and have a damper valve in line I can close off to stop or control the air flow when its needed or not needed?