kevlar? the renforced kevlars are nice, i have a SPEC stage II that i just put in, it is stiffer than a stock, but about the same as my dad's F-body Camaro, so i can easily deal with it as a DD id reccomend it, once it breaks in there should be very minimal if at all chatter plus it should hold up to most anything you throw at it (N20, boltons) it seems like a strong clutch for the 350+ miles ive driven it... ill see what happens once it breaks in