Paul L - thank you very much for the advice, very helpful. Rustoleum paint sounds like a good idea. I remember you having a problem with different shades of green, so thanks for the tip regarding the paint quantities too.
You are also right when you say that, no matter how the paintwork turns out, it will not stop us enjoying driving our cars, that's for sure...
However, at the moment I am still "agonizing" as to which type and thickness of the metal I should use to fabricate the bulkhead...or do I use my fiberglass copy of the bulkhead, cover it with thin aluminium sheet to make it more fire resistant and glass it to the frame...or is that a silly idea???
....any comments and advice would be appreciated.
Cheers, D