Lets say that I took GMPP's 350HO crate engine, pulled the cam and replaced it with an emissions friendly cam (Edelbrock's performer cam), and threw on the EGR Vortec intake with a Carter AFB emissions carb. Would this pass an emissions test like a block with the Edelbrock Performer heads and Performer intake? I figure it's not that much trouble to throw the original cam back in after passing emissions if I put on a 3-piece timing cover.