Hi mate, IS200 is a fun car to go sideways if you have a bit more power than 155bhp. A supercharger or a light turbo conversion transforms totally the IS. Regarding the performance of the IS I have past many OEM Civic Type R's. It all depends how much you want to tune your IS. You can reach it up to 800bhp (if you have the money and the craziness to do it) by just fitting a supra engine or a motor from an IS300 and fit a turbo kit...