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Re: The Rapp on exhaust

  I've had wrap on the pipes on my '73 RA IV 455HO from the cast headers to
  the open 'Trapps (no mufflers) for about 5 years now. The pipes are
  standard muffler-shop aluminized 2 1/2" pipe, custom bent & welded. No
  degredation has been observed whatsoever, but, this is a fair-weather
  machine and NEVER sees rain or salt. I suspect that the temps in this
  case are just not high enough to damage the pipes. YMMV.