How do owners of very old or rare vehicles find replacement parts to keep it running?

Question

How do owners of very old or rare vehicles find replacement parts to keep it running?

In: R2 (Narrow/Personal)

Answer 1

It’s getting easier every day with 3d scanning / additive manufacturing / global shipping.

But you also face some ethical problems, like, the process to make chrome parts is pretty nasty. Does it really matter if your bumper is absolutely perfect?

IMO no because I’m gonna drive my cars. But to a [concours](https://en.wikipedia.org/wiki/Concours_d%27Elegance) person it does.