Which paint for engine?

Looks great does it last long must last longer than bare alloy 

I've used PJ1 black engine paint for years, two colors satin or gloss.  It's epoxy based and holds great for years.   I've started mixing and matching between the two to add a little flare to the engine.   Some people have used gunkote from Brownells, I've never used it on engines.

577nitro.