I'm trying to get into the 11's safe on my stock block. I run 12.3x's pretty consistent. I have a set of cams for my truck, they are some stage 2's. I have a M.P. s/c on it now at 17# of boost. Now the question is, do i put a set of ported heads with my cams? Or do i put my cams on the stock heads and upgrade the s/c? This is to get the 11 second time slip i been wanting, but still being safe on the stock motor.