Engine compartment/component paint type/color

[pzxzqg]

Bought the antique ford green from Synder's to get the engine color right on the 1939 A-model but unclear about painting things like the firewall, generator, starter, water pipes, steering column (engine side), exhaust pipes, ... . I'd like not to get to far off the original track on color but want to use something as durable as possible (rustoleum black gloss enamel paint?). Suggestions?