I'm In the Process of restoring my 69 z/28. After 22years of owning it I decided to give it a clean up. My Question is the fuel line is original(3/8) and has black paint on it and slight scaling. What is the best way to clean it up? I feel it is best to leave the original one on the car. I replaced the Brake lines Years ago with stainless ones. Should I just replace it also?