Thanks Kurt, that makes sense. So for a car that would be judged at national level I should just let paint burn off to rust color to be correct? I see other cars painted with raw cast color and that just doesn’t look original to me. I was just thinking if they make a high heat exhaust manifold paint to look like fresh cast that someone would have the same for Chevrolet engine orange. The fun part for me is trying to make a restored car look like a brand new unrestored original car by a true expert.