I have the firm feel II and the front sway bar kit and the front tubular upper control arms on my 69 charger , I love the way it feels and steers to me. I don't want a big mopar to be to tight in the power steering,just tight enough to feel the road and have no old car wander or slop . I like to be able to steer around parking lots and side streets with a two finger feel but that is my preference . My vote is on the firm feel II .