Appologies for the simalarities Ronnichols mentioned.
Were talking about Performance Engineering in Ross Ohio, also run by an Eric.
www.perfeng.cc
I don,t know who he buys the chambered mufflers from. He builds you complete side pipes or you send him your side pipes and he replaces only the muffler and powder coats if needed.
PS still waiting for call back from him on my defective side pipes.
Carmine