Also my car is fairly well known for lapping well at trackdays,has only EASILY found bolt on stuff,KONI's,polybushed all round,strut braces,bolt in cage,cossie brakes and stripped interior.Only had around 180 BHP,but passed many bigpower cars.With that little power the car really had to handle good to lap quickly. So I'd say a RST can be made to handle without too much trouble.Regards,Micky