Well track season is here and I need to "fix" my suspension. I bought the car with Eibach Pro-kit Springs and Bilsteins Shocks. While the set-up is decent on the street it leaves a lot to be desired on the track. My biggest problem is the springs are too soft. Ideally I would like the Ground Control track/school coilover kit but money is tight. I was thinking swapping the springs with H&R race springs but I heard the springs are too stiff for the Bilsteins shocks. What other suggestions do you have?

I'm guessing a set of sway bars may be most useful here?