Porting small block 915 j-heads

Hey guys
I´m beginning to feel that I have started something bad here that was NOT my intention
@MOPAROFFICIAL your comment "love to see this stuff" made me a little confused what to think. My answer was not meant to stir up emotions in any way (Google translate)
If we had been standing eye to eye IRL discussing head porting and you said those words I would have put my hand on your shoulder and said my comment with a smile. More as a joke
No intention making you upset. Hope we can put this behind from now on
I´m listening to you guys and and suck it in. I realize there is a whole lot of experience involved and I just want to suceed with good numbers as a beginner. Not shooting for high score but some decent flow would be nice.
Therefor I am
1. cut up a 587 head in pieces , got a cracked one from a friend. The big question here is: big diffrence in casting? anyone who knows? the bump under the lower head bolt look the same
2. somehow try to figure something out to measure the flow and compare changes just learned about Pitot from you guys but flow balls??? ha ha Is that for real?

Thanks for now and PEACE