Hot Rods Primer choices

This discussion has been going on for decades. In the seventies and eighties the cars we did with lacquer and it was so labor-intensive it wasn't funny. A rust blister showed up a year later was devastating. 32 years ago and wanted to know what was the most powerful primer in the world and this is what I came back with. The new epoxies coming out of Europe use glass spheres and Mica got to cut off the oxygen to improve corrosion resistance. Zinc phosphate epoxy is not airtight that's why they added glass spheres and mica to cut off the oxygen. zinc-rich epoxy primers 3000 hours of salt spray , epoxy 700 or so, aluminum pigmented moisture cure 3 coats 14000. 32 years ago I painted the top of a 38 Packard where the hood ornament was and it was pitted. I sprayed two coats and pitting was gone I displayed that radiator shell for 18 years at all the major car shows on the East Coast. I still have it today .