There’s actually pics of two different heads there....... stage IV and stage VI.
The 3614476 is an old stage IV head.
The rockers on the stage VI look like the Mancini rockers to me...... but could just as easily be Pro Comps.
If they have no bearings in them, then probably Mancini.
If they have needle bearings, then Pro Comps(or some other variation of Shang Hai Sharps).
Hard to tell by just looking at a pic, but the port openings on the stage VI look bigger that std, but not fully MW size either....... might be the reason for the home made gaskets.
A quick measurement would answer that question.
That 6835 stamped into the stage VI head is likely a “job number” from some shop, which means it’s likely someone went through them at one point.
Yes he sent pictures of the stage six first and then the iron stage 4 he is digging through his dads stuff to see what he has and wants to start slow building a drag car. He is young and is overwhelmed on where to start on his dads parts stash. said he remembers his dad was a big Mancini customer (weren't we all) he has a lot of digging and learning to do.