^^^^don't get a full mega n1? are you serious?
i agree if you are scared/don't want to have a loud car otherwise they aren't a joke. they are a pure power making exhaust system with a tone to match. they are pure quality.
i've never went for anything less then a kakimoto on all of my skylines. on one of my 32s i had a full mega n1 straight pipe from a high mount t04e turbo. THING SOUNDED NUTS when on throttle! it gives you the pure rb sound. i miss it so much.
now i've gone for the quieter route because of me trying to keep my car legal and i have a kakimoto R now. has a awesome tone are pretty much epa friendly. good exhaust if you want something quiet without being restrictive