It seems that once you get tires figured out the Eibach rear bar is the thing you want to make the car rotate and if you need to balance it out, you can get a base Fiesta front bar to add a little stiffness at the front. The Steeda end links might be a good tuning aid. Race wheels, shocks/struts, a big brake kit and weight reduction round out a comprehensive handling upgrade. How much of that you can do is up to your class rules. I just wish someone would actually stock the rear bar so we don't have to order and guess about when it will come.