Whats up guys, just joined this site, i just recently got my 2nd mustang 07 gt windveil blue, but this will be the first time i start adding some mods to it, first off i wanna do up the exhaust, my first ? is the factory pipes are 2.5 inches, i wanna upgrade to 3in, ive found a magnaflow catback exhaust and x pipe, but will i need new headers, should i just go ahead and get some long tube headers as well, or what? Anyone got suggestions, how is magnaflow, ive heard slp, magnaflow or flowmaster. Any info would be great thanks.