Best Engine Paint ?

I have painted my dusters engine with duplicolor rattle can ceramic engine paint possibly 2 years ago. The engine has never ran and it's already rusted through majority of the block just by sitting around. In my Dart I have a slant six and used also the ceramic engine paint and after driving it around it has burned right off and looks like crap. How is it these show cars have amazing looking engines with nice bright paint and are driven around as well ? What is the trick to this ? Thanks


Aaron