I'm going to chime in from a different angle. The question for the thread starter is: are you sure you want/need to powershift? Powershifting is great when the tires are hooking. However, if you're running on stock (or less than sticky) tires, a powershift can cause a prolonged chirp, especially on the dragstrip, costing you e.t.-wise. I'll leave out the, "it's not great on your transmission and clutch" part, which we already know.