When I restored the 61SS that Robert now owns I found a complete NOS exhaust system, of course it was covered with surface rust and looked terrible so I sent to a Jet Hot place in Hopewell, Va (now closed) and this shinny silver coating applied. Just like Jims headers they looked great. That was 11 years ago and at the time it cost 500 bucks. They lasted good, I used to polish them before shows but after several years the tail pipes developed some brown spots that would not polish off, turned out to be rusting grom the inside of the pipe. But I was happy with them