Question on port matching

A similar episode, but with heads would be interesting.

Unported castings right ootb, “prepped”(valve job and bowls), fully ported.

The fully ported version should be cnc...... that way it represents something anyone could aquire.
I’d prefer to see it done on something like a 500” build capable of over 600hp with the ported version.
I’d also use Stealth heads since on the flow bench at least, there is a notable difference in flow between those 3 stages.

Then....... to take it one step further....... since the intake swap on a BBM is so easy....... try an ootb and reworked manifold on each set of heads.