Regardless of what you put in your car your going to have to get an aliment check. When shortening the distance from hub to tower brace, you change the camber of the wheel. Now if you are looknig for a show kit, teh ground control would be best. They use the eibach springs, but "supposedly" give you a bumpy ride unless using aftermarket struts and shocks. For performance, im sure the racing beats are great, I myself got hte Eibach but do not have them installed yet. Eibach is teh most reputable company i know of. I would stay away from any springs that cost less then 150. The third option would be for the big boys, thats the ajustable coil over suspension. Sold usually per unit, but it will run you close to 1500 for all four. for a mild lowering that is inexspensive i would put my money on eibach. And for show the ground controls. Thats my $.02