3D printing parts for cars?

[Marm]

What's your point? Are metal AM parts better than traditional?

Answer - NO they are different with different pros and cons.

Seems like your second line defeats itself. If 2 items have different pros and cons, then the exact criteria you are looking for determines what makes one better than the other. You never specified what makes a better part.

So if a particular part is unavailable anywhere, then fabricating your own is better then not having it at all.

And again, for competitions, it depends on the criteria. If the car you have restored is better than a totally original vintage car, then it depends on what the judges are looking for.