I am building a 3 piece rear partition made from .060 sheet steel which matches the front firewall. The thing I am having difficulty with is how to seal the edges up the sides and over the inside of the top. I have a gap of .25 to .50 around the edges. In the past I have slit rubber hose long ways and slid it over the outer edges of a panel. This would give me a good seal, but I doubt it would meet fire requirements. I could fill the gaps with a fire resistant calk, but it would not be pretty ('pretty' does not add speed)... Any suggestions would be appreciated.
As to the tunnel, I do have front and rear spec. drive shaft hoops tied into the frame with cross members. I also have a spec. clutch/flywheel cover. I could add a metal outer cover over the fiberglass, but with what purpose? As long as it is sealed from dust, smoke, etc. and critical components guarded I do not see where a metal cover does anything more than what I have now (fiberglass). It might add some fire protection, as fiberglass will burn, but it does not burn aggressively.
Shirl Dickey