I need to paint my bare block inside and out.......I want it gloss black what works??? Thanks DarrenWhat you talkin bout willis? " Inside and OUT "? lol rattle can if you don't have access to automotive paint. Just prep the hell out of it and use some BULLDOG adhesion promoter. Get that extreme temp crap at wallyzone and get after it. Good luck. I've painted 3 blocks but used ppg and sprayed it with a gun. I haven't had any problems but havent used rattle can before.