My '99 2.5RS's insurance cost me nearly as much as my '08 STI (I owned both at the same time) because of 17 year olds crashing their 2.5RSs. The rear control arms on the RS would flex under the pressure of an aftermarket swaybar and you'd get some serious snap oversteer. My RS was the best autocross car I've owned.. but it was dangerous in the hands of inexperienced drivers.