I have my 14" with duals that I took off my truck when I lifted and replaced it with a 14" chopped before the axle. The muffler is several years old and was busted off at the inlet, but all the dual piping was replaced by insurance when I was rear ended. It was also routed so you can still fit a spare in the stock location. It was done by a local muffler shop about 8 months ago.
Asking $150 for the busted muffler and piping or just $100 for the piping
Local pick up in San Angelo, TX