i had a rs eclipse before i got my gsx and for the money you would spend on fixing up that car to beat a stock gsx or gst you would be better off just to buy one. I knew a person with a gs and they had cai and cat back exhaust and headers cams and he went through i think it was 4 of the 420a motors but he could keep up with a gst because he had the neon rt transmission, in short just but a turbo