Manifold Dress Up.

I'm putting this in here because while it is about a part of the engine it's more about how to make that part look pretty rather than work well.

Okay, my question is about how to make my slant six Exhaust manifold look better than it is. Since it's the factory manifold i'm curious if there is a special way to clean/paint it even though it's cast iron.

thanks in advance.
Tiny