OK, we all do it maybe just don't admit it. While seated behind my car during judging I overheard the judge mention the rust on my exhaust clamps. This will be one of the things I suspect will be noted on the scoring sheet I requested and I look forward to all of their feedback and opportunity to make improvements. Knowing this could possibly be a noted observation what would be the correct finish for the clamps and hangers (phosphate & oil?)? This is for my Dearborn, December 71 Mach 1. Thank you