alright, i know there are alot of cam threads out there, and believe me i just went through alot of them. But i couldnt find an exact answer so here we go. i am doing alot of mods on my car right now, and one of them is new cams. i have ported npi heads. now what cam is best for me. i want a pi cam, maybe something in the comp cam lineup or vt engines maybe. my ? is do i need new camshaft sprockets or will my stock ones work. i know i need the new bolt, and can it be done without taking the timing cover off? What cam do you guys rec. for a vortec s-trim, intercooler, pi intake, headers pushing around 12 psi boost? sorry for the long thread and thanks for any info you may have for me.:SNSign: