I just need to gather as much info as possible so im just using this thread instead of having to start a new thread several times a day....whats the diameters/boost numbers on the different sized pulleys for the sc?how far can I go? I can go on and on..i want to safely run 10% underdriven.. What headgaskets should I use? (ive heard of specific strongcopper ones I need)..i could go on and on..but for now..that is all..