I've been looking [as the title suggests] into either fitting a Vortech, or buying some AFR 1402 cylinder heads. Obviously the cylinder heads are quite a bit cheaper, and bolt straight on. I assume these heads could take advantage of the SVO manifold [cobra] and 65mm throttle body and cold air intake? I know the Vortech would really boost power on a planetary scale, but what sort of gain would the heads give in comparison? I read on here fitting a cam is not such a great idea, so these seem to be my best options.