hey im currently working on my 2003 silverado ss, i just instaled my cam 581.lift intake and exaust, im working on changing the valve spings and push rods right now, running a manacharger with 9psi of boost, jba headers, and nelson tunned cpu, my question is what i should gap my plugs at, the old ones were at .035 and im not sure if it should be smaller, also what my fuel press should be at an idel, its around 45psi and i think it should be at 50psi, it has the inline fuel pump but not the one in the tank, any input would be great im hoping get her running later, thanks


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