if i get a spec stage II or III clutch kit, and a billet/steel flywheel, do i HAVE to buy a new hydraulics kit or is that something thats optional... if it has to be done, where can i get one and whats the difference between mine and the new one...? also, is it worth it to just get a stage III or will it chatter really bad, i plan on getting an x pad and i heard that helps with the chatter... thanks