Im roasting in my car, ideas to cool it down.

I thank you all. Obviously I try to keep my door open as long as possible and try to minimize seat time but only my drivers window has a regulator everything else is lexan and stationary. I assume the heat is coming from my fenderwell headers right against the firewall. I was thinking about like reflective heat shield stuff. Inside on the firewall. Anyone recommend any brand? Thank you all. It all goes away when I hit the burnout box but I can't wait to pull my helmet off and open the window at the end of the run!