I am wondering if anyone has any experence with centrifigal superchargers. Right now I have a roots type supercharger on my 383, and I need more boost. I built the engine to handle a 6-71 and I am now looking in to a F-2 Procharger with an intercooler. I want to run 20-25psi of boost and am looking for 1100-1200 hp. Thanks for your input.