call www. completeexhaust .com and mention that you are a stangnet member. You can get it for $330-360 shipped. Also try performancepedler. You have to call for Magnaflow prices. All Magnaflow dealers can't advertise below a certain price per Magnaflow so if you call you can get it much cheaper.
Ahhh..... what about right here on Stangnet? If I'm not mistaken the PartShopper will MEET or BEAT anyone's to the Door Price! Check them out and give 'em a chance, you'll also be helping to support Stangnet!