I have a 90 Mustang and getting ready to paint the engine bay while I have the engine out. I am wanting to paint it Satin black so that is why I thought about using your extreme chassis black. I have scruffed and cleaned the engine bay already so it is ready for paint. My questions are, do you think the chassis black is a good chose for durability and will I need to use a primer before the chassis black or can I go ahead and spray on the black. There is no bare metal showing, just a clean scruffed rust free surface. Thanks in advance for any advice.