Hi,

On my two tornado that I'm currently building, I have used a Nomex Carbon Fiber for the Firewall (1/4), the floor is Carbon Nomex (1/8), so is the Tank support, and the Throttle/Mixture will be the same, but the Rudder servo will be Carbon Fiber Nomex (1/4).

The plate for the fixed gear is End balsa Carbon Fiber(1/4).

Hope this help Daniel Dupont