Magnapack cat back

Hey guys, i bought and fitted the Magnaflow Magnapack cat back system to my 2001 GT yesterday. It's loud, very loud. I still have the stock H pipe, my god what will it sound like with high flow cats or even off road. It has a real deep rumble and at WOT it's incredible, i've heard no other Mustang like it,it''s awesome. It was also real easy to put on and is all stainless, a top quality item. I just thought i'd let you guys know how good it is.