Remember all that machined billet that cost an arm and a leg?
Possible backyard hotrodder replacement parts here..
(imagine a pitted and corroded hood or dash ornament.. nasty and ugly, but good enough to use to create a mold. Hey!)
And the new one will faithfully reproduce the contour of the pits and corrosion?
Already do that. Aluminum is easy enough to cast especially if you not concerned about maintaining one micron.