Well it depends on what you plan to do with the car. Obviously a set of stiffer coilovers are going to help plant that power to the ground. But will you be daily driving it? Taking it to the strip? Or the autocross? How much are you willing to spend? If you are daily driving it you may want to use a set of progressive springs and something like Koni/Tokico D-spec/KYB AGX's.For other uses such as autocross a good set up for under 1k is hard to believe but some groudcontrol coilovers and some koni struts. It's a stiff ride perfect for the track.And if you have over a grand to spend get some JIC Magic's or Tein SSP or Flex.