Rinse, repeat…
Sand, bodywork, prime, sand some more. That's what prepping for a beautiful paint job is all about.
Take these zinc die-cast headlight buckets, for example.They're part of the front grille assembly. The castings were broken from a previous collision so they had be specially soldered to repair. Multiple layers of old paint (right over rock chips) were stripped down to metal, and then primed.
No, this red '66 isn't ours (owner: Stan Hawkins, Visalia, CA) but it is a good example of what we think ours will look when repainted the factory Candy Apple Red and reassembled. Keeping sight of the bigger picture is tricky when you're working with bits and pieces.