Head flow and power differences question / discussion

Just a few ideas to consider from my limited porting knowledge and lack of real world experience.

Cfm is only part of the story.
Port efficiency comes into play.
Your air speeds throughout the port, as in no dead spots.
And there are more.

Your intake manifold is going to be your choking point with either of those 2 heads. You would have to flow the combination together and compare both choices.

With heads that flow in that range, I believe a tunnel ram would be your best choice.