ScreaminYella06

I have decided to buy some Supreme GT 300566 axel back exhaust from Ninosport for my 06 GT 4.6 Mustang. After reading many threads on this it looks like this is the type of sound I would like and that it won't be too agressive. The only issue I have is that it is suppose to be the same exhaust that Ford puts outbut are only half the price of the Ford mufflers. Is the quality the same or will I be buying junk and having to replace them prematurely. Any advise is appreciated.