Thats funny, looks like that Chivy has been sitting in the garage for those 27 years!! LOL! Set it outside for a couple of years and see what happens. Look around at early 90's Toyota and find one that hasn't faded!! "SINGLE STAGE" Enamel. Hell, for that matter use Laquer. You will buff the finish off within no time. It fades quickly too.
Prep has very little to do with the integrity of the finish. Washing with the proper ph soap and waxing on a regular basis extends the life. This is why automotive finishs now used Urethane. No one takes care of paint anymore. Claims from wax producers say their product requires once a year application. This is what happens to finishes now. People have gotten LAZY! GOOD LUCK on your choice of single stage. That is a cheap way out! Spend the money and it will be the last time it will ever need to be painted.
