[BlackTalon]

But on the earlier cars, the calipers were not painted or coated... (as far as I know, at least)

I guess the long and the short of it is that people here are not familiar with Goldline, and most would not ship their calipers off to be rebuilt. Not sure why shipping would cost a fortune though -- can't be more then $25/ each way for UPS. If you go the Goldline route, take pictures, etc. and so others have the info in the future.