I have an ACT XTSS Clutch with a Prolite flywheel and there is a huge difference than stock. There is not really a problem with the prolite on the street, but if you want to feather your throttle around a turn, it is definitely the way to go. The XTSS grabs really hard, so if you do a lot of traffic driving then you may want to stick with the HDSS. Overall I love the setup though.