Excellent info, thanks.
I plan to have my 68 done in a single stage, OEM quality (or lack thereof) only. I want the car to be as close as possible to what it looked like when I bought it in 1976 ..sans any fading and damage of course

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Is it still possible to find the necessary single stage paints in the proper color? I've painted the car twice before in my life, not well either time, but I'm older and more patient and have better toys now. I trimmed out the car in the original Vedora green some twenty years ago, some kind of simple, single stage paint, (Acrylic enamel?) can't remember if it had hardener or not. That trim paint, after sitting outside under a cover for 15 years, and in a garage for five years, is still as shiny as the day I painted it. Went on real nice too. Wonder if a similar paint can still be purchased?
JohnnyB