[eschaider]

You are close enough that the radiant heat off the header tube will burn the fiberglass and whoever's foot is on the other side in the footwell.

My suggestion would be a 3mm aluminum plate for heat shielding purposes that stands off the foot well by 12mm or so to provide an air gap for cooling. Secure it with aluminum stand offs at all four corners. I would also wrap the header tubes in one of the many lava based fine mesh heat shielding fabrics that are commercially available for the job. You should try to keep the wrapped tubes 50mm or farther, if possible, away from the 3mm aluminum heat shield.

If you really wanted to get after the heating try to also provide some cooling air flow to the area with ducting that draws air from high pressure areas on the front of the car and exhausts it downward over the heat shield exiting under the car. Be sure to consider some sort of fiberglass protection in the cooling exit path or you will eventually burn that glass up also.


Ed