eh, a sc is driven by a pulley......limited by rpms of the engine but with instant constant power......its going to cost you around 2G's for a jackson.... but its reliable........however the turbo can give you much more......depending on how you want it to run (size of turbo v.s size of compressor wheel) and app. this you can get and do yourself with the help of the search button......for under 1,000 depending on your connections in your area oh yea by the way.....what engine are you tryin to charge? cuz i have a brand new garrett t3 with a d-seires exhaust manifold