I've always run stiff, 3 finger clutches. My latest street car, I decided I wanted something a little easier for cruising in traffic. Getting older. I reached out to Centerforce and the tech recommended the CFII (not dual friction). It's so much easier on the leg, zero chatter, smooth release and never hints of slip. I'm only running about 400hp smallblock but I like to grab some gears. Zero complaints and would buy another tomorrow.