I'm looking to buy a hindle high mount system for my 99 CBR F4. I found that there is a "stealth" and a "supersport" muffler available, the supersport being louder than the stealth. Hindle claims 3-4Db over stock for the stealth and 5-6DB for the supersport muffler. Does anyone know how loud these really are. I want loud by I still would like to be legal when I finally get out to the track....... Any help ???