1933 standard 8 exhaust and intake manifold and nut finish

Posted by Rolls Royce 1 On 2011/7/7 17:17:38

I'm doing a restoration of my exhaust and intake manifolds. I need to know the correct finish on them, as well as the nuts that attach them to the block. I have checked the Judging guide. but nothing about the nuts and washers. I believe that the manifolds were originally gloss black porcelain but what finish do the nuts and washers have? Natural steel, stainless, brass, black or cad? I have seen all sorts of finishes and wondering if anyone knows for sure the original finishers.
Thank you,
Bob Ratinoff