Looking for some info. While searching for different exhaust for wife's 11' Busa we came across this. Looks to be from 06-07 gsxr 600 (we have one also). Wife likes how it looks. My question is will it flow enough? Seen guys using Micron's R6 cans but this is stock. Busa already is just right for her stock but dont want to kill power either. Thanks for any input.