I know a great guy, Greg at Mighty Muffler on Cave Creek - 10034 N Cave Creek Rd (602) 944-5785

This guy is great and honest. Wont charge you an arm and a leg, hes done about 5 cars for me and has always been cheaper than anyone else Ive priced.

Im sure you probably have your own shop, but if you dont I'd give this guy a shout. Hes also a Magnaflow dealer.

You'll be happy with the MagnaFlow, I like Flowmaster myself, but mostly you want to be concerned with the drone sound on highway speeds. Get the wrong exhaust and you'll regret it.