What could I do to gain around 50 to 100hp? I currently have a 2000 Silverado, with a 4.8 5 speed manual (currently swapping out for a T56). I have some bolt ons JBA Headers, Magnaflo exhaust with out cats, HPP 3 tuning and a MAX Air intake. Eventually I want to do a supercharger, cam, and some electric fans. I would like to gain 50 to 100 hp out of my engine before I do the supercharger though. Any ideas??????!!!!