help wit purchace of dougs headers....... natural or ceramic coated????????????

I had their nickle chrome ones on my '65 360 Valiant. They did discolor, but I was happy with them. The chrome stayed on and it's still on now. The guy I sold it to still has it with them on it. They have not discolored anymore than they were when I had it. I sold it about 13 years ago. Easiest headers I ever installed. I strongly recommend using RED high temp permatex on the slip fit tubes, or you will have to remove them with a sawzall.