Can or spray gun

I say spray bomb it. I used some plastikote on my engine and it came out great. I don't think I would have gotten much better results with a spray gun.

Also do a bit of research on what you decide to clean the engine with prior to paint. Some things might screw up your rubber seals. just want to point that out before it happens.

I know i used brake cleaner to clean my head on my first headgasket I ever did(a few years ago). It ruined the valve guide seals and the car smoked on start up after that.:banghead: