Inside of metal panel coating?

Save yourself some money and get good ole rustoleum stop rust paint.The go over it with rustoleum under coating lays down great.You dont even have to sand the stop rust paint before applying the under coating.You think of rustoleum as being a cheap paint but it has been around for years and there is a reason for that.I tried all the high dollar crap like eastwood
I will check them out! I didn't even think about them but now that you mention it, I agree! They have been around for longer that I have and there are plenty of good reasons behind that.