I found what I believe is a better kit by Mossellman. They have a kit that uses the Vortech Supercharger for $4,500 which was designed for the SLK320 so it should fit our car. They are replacing this kit around the 1st of the year with a roots style S/C for about the same price. I would wait for that kit since it will have a lot more torque. A roots style S/C will make the car feel like it has a V8 with very linear power which will feel much smoother than a turbo or Vortech. For me I have decided to put a Mercedes V8 in the car. I have found an engine and if everything works out I should have the engine in my garage by the end of the month.