[Rob]

I need to build a firewall that comes back further than the original because of the Subaru motor.
Initially I was thinking about using aluminium with the insulation / fire retardant (sp?) material that they use in engine bays on fiberglass boats.

However, I'm not too sure which way to go. I want it to be a removable firewall, and the aluminium is quite flimsy... If I were to go with steel, what type of steel and how think of a plate should I use ?

Thanks,

Rob.