Dude just because you have coilovers, doesn't make you a racer. **** my 280 Z has coilovers up front and I don't race it. It looks better, allows you to fit wider wheels w/o rubbing against the suspension, and you can totally adjust it to ANY height you want, so if you want 1.8", or 2.3", or .9", whatever you want. Ground Control and Modern Motorsports sell kits for like right at $400...and I think Arizona Z cars is a little bit more but you get to choose your spring rate, not sure if MM does that or not.