i have a C43 as well how ever my football number is 42 to i just changed the 3 to a 2
, the kompressor i have is a kleeman, i have not had the car to a dyno yet so i am not sure how much HP i am getting from it, but i do feel the difference and it feels great. i paid four thousand dollars for it. but i got it used from a friend who was selling his car. i think new they sell for ten thousand, hope this helps.