Until you test the specific head and intake, you are not going to know what is needed. That's my opinion anyway.
Humbug, I'm not going to know anything but what this engine does with what we give it.
Agree with everything above^^^^.
This is not directed @ IQ52
Here's the thing--If you port your manifold for flow and flow only it will wind up WAY too big. Once you have a "catalog" of builds and experience that will be your guiding light. In cylinder CFM demand is what really determines output and that is really different from what the flowbench tells us. Then again Jim tells me I share too much. J.Rob