What flat clear is being used on engines and underhood

[travmon]

Not sure I really trust what my local paint supply guys are telling me , they are great guys but none of them are painters.
looking for a no gloss clear for the engine and components , I have used ppg flex and flat before but you have to mix to your desired likeness. Is there a clear that is ready to spray out of the can with the correct sheen ?
Also trying to replicate with paint the texture that is in the powdercoat we are using, any luck with texture additives under paint ? ( light texture is what were after ) What is everybody using these days and what are you happy with...THANKS FOR ANY HELP..