Your gonna need a strong bottom end with some compression to go with it. When you start playing with the ports and runners you are changing where your power is made. Granted you are gaining power because a engine needs to breath but you are also moving the rpm range to where it is built. If you were to open the intake runners and keep the exhuast runner stock it would help you retain torque at the bottom end. A person can go on and on about this. oh hell just throw a set of stage 3 6.0 heads on it and go <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

 

The truck's got a Z06 cam, nitrous, headers, 3200 stall and so on.The 5.7 heads don't sound like the best way to go. So what is the best way to go on this truck?