I have an xr6 turbo ute with forged engine runnings around 20psi and it has a button clutch in it, lasted maybe a year and a half and has started slipping so dont bother going that way and also the gearbox has been replaced it destroyed itself with the power so start thinking about upgrading that as well. but from who ive talked to the mal woods option 3 clutch is the way to go, a mate of mine has one in his xr6t sedan and loves it.