Hi, I'm thinking of modifying my 300CE. I want to extract more power from it to give it a new lease on life. Currently it is in stock condition beside a sports exhaust and the mileage is at 183,000Km, (I think thats about 120,000 miles, I'm not sure). I'm contemplating whether its worthwhile, and what kind of modifying could be done besides turbo-charging. Any Suggestions?