I suggest you take a look at these. They are EPA approved and will greatly enhance your exhaust system and flow.I’m looking for stock cats for 2012 gt500 preferably in California but I can also pay shipping.
For the OEM cats I could do like 600 depends how much shipping would be. Do you have pics of it?I HAVE A SET UP OFF MY 11. THEY HAVE 10-11K MILES ON THEM. IM IN NC . MAKE ME AN OFFER