The plus model is an interesting change to their range. It used to be they only came with swift springs. That is what my 441s have. Unless you are racing, you might not notice a huge difference. I don't know anything about their now standard spring, but swifts are going to be more consistently matched to the advertised spring rates. Custom valving used to be standard too. I would inquire what their standard versions spring rates are for. If its just a street car, and that is not some race spec, those might be fine for you. If you do the research for motion rates, unsprung weight, car weight, and handling dynamics custom might benefit you. If you get them, make sure they know you have an awd model. They sent Godzilla Juice some fwd rears and they were far too long and he could not lower the rear.