The only problem with p o r 15 is that it is very thick out of the can , if you reduce it you lose a lot of its bite it is an air dry coating . .
I would say good automotive paint, base coat clear coat , you can get diff clears from flat to high gloss. And it is a catalyzed product , very durable ,drys fast .
Then there are primers for over metal or adhesion promoters for plastic and carbon fiber. Hope that helps