KR> firewall

[Don Chisholm]

just to stir the pot a bit more on the subject
of firewall mat'ls
check out page 12 sonerai construction manual
just about every steel tube and fabric airplane that I
have encountered uses galvanized sheet for 
firewall material. 
 studying other designs can only make your airplane
better, each design has it's own kind of ingenuity
Don Chisholm