AzRoute66 Posted November 17, 2008 Share Posted November 17, 2008 Z06 NPP or Bi-mode exhaust mufflers retro-fitted to fit C6 corvette's....3" pipes were cut at the mufflers and 2 1/2" pipes welded on...comes with NPP in a box system to activate the mild to wild...$850 Link to comment Share on other sites More sharing options...
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