Where can i find a factory mazda 6 exhaust?

I have a 2004 mazda 6 2.3 l 4 cylinder. It has a magnaflow exhaust on it right now and i was looking to get back the factory exhaust because of the loud noise. I would be willing to just swap it out with anyone that wants it. Or do you know where i can find a stock exhaust? Anything will help. Thanks!|||Junkyard, local exhaust shop or a local poster on a Mazda forum maybe...|||Find a big corperation dealership chain ask for parts department and order one