I am curious as to those who are using this system - is it as great as they say it is? I have seen them do well at track days I am curious as to how they work? I know its just air shocks but how do you adjust for bumpsteer at different ride heights? also how do the rear shocks work in place of rear springs? what I mean I know with coilovers and leafs you pick the rate you want but how do these adjust rear rates? how do sway bars factor in?