first of the is200 is a 6 cylinder and engine code is 1gfe. the altezza come in the same engine as the is200 and you get one with a 3sge engine in it which is a beams engine and has 55 more bhp than the is200. if your looking for 300bhp then buy a rs200 altezza and turbo/supercharge it. if your going the engine conversion route then be prepared to have over 10k in your pocket mate