Another Mopar Off My Bucket List - Barracuda Fastback
I have no idea! It can't be too bad, as I see a lot of aluminum automotive parts that have been done. The process converts a very thin layer of the metal surface into a protective coating, which can be dyed at the same time. I used to work in a shop that made a lot of aluminum aircraft parts, and everything was anodized in one way or another. It is so widely used, I doubt if it is too expensive. Unfortunately I have totally lost contact with that place due to a relocation.
Never seen a radiator done, I think there may be issues with the very thin metal the fins/tubes are made from. There has to be a reason they are never done.