I relinquish the cosmoline title I have regrettably held for some time. I lust after some of the engine compartments I see. They were probably resprayed while the motor was out. May be the photos but are you missing part of the windshield seal strip?
As to paint, it's about $500 for primer, base, and clear coat in Glasurit, Spies-Hecker, Sikkens, etc. It's the same in Dupont and PPG for their top of the line. You can get lower quality and price in Dupont and PPG but not the the first three.