Hi Mark. John Shaffer here. On my first KR exhaust, I used Hi-temp, 1200 or 1500 , header paint. Next one I had Electroless Nickel plated ( external only) and it made about 8 years. My present is Jet-Hot coated silver, and is coated inside and outside. It has been in service just under 2 years, with no apparent degradation.
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