Suggestions for new design Aluminum Mopar SB clean slate (kind of) cylinder heads

Dale Davies said
That is not expressed, but with the knowledge we have today open chamber is a nogo. Poor flame travel that promotes detonation. That slow flame speed requires more advance and is actually poor for emissions.
Seems the design iis intended toward Magnum, which should be closed chamber

Dale Davies said

For BPE the situation relates to production costs. Many engines use ball stud rockers that function very well. Are shafts more stabile? Yes. But for a street focused engine the stud mount are good for the cost. Also remember one of Johnny Mac's requirements was pushrod oiling. So that precludes the arguements. Shaft rocker assemblies are available for Ford and Chev applications that came originally with studs. For racers you can spend the required $.
We must keep the OP expressed conditions in mind with this.

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Dale Davies said
For BPE the situation relates to production costs. Many engines use ball stud rockers that function very well. Are shafts more stabile? Yes. But for a street focused engine the stud mount are good for the cost. Also remember one of Johnny Mac's requirements was pushrod oiling. So that precludes the arguements. Shaft rocker assemblies are available for Ford and Chev applications that came originally with studs. For racers you can spend the required $.
We must keep the OP expressed conditions in mind with this.

What do YOU think the cost difference is between shaft and stud rockers?

Look at the cost of a Speedmaster head. It has shaft rockers. So that’s an unrealistic idea that shaft rockers cost more.

All Blueprint wants to do is try and come up with a unicorn head. As long as you don’t move the pushrod it won’t be better than anything else out there.

Chrysler didn’t move the pushrod because they were stupid.

I‘m far from a “hardcore” racer and I read what he thinks he wants.

What he shouldn’t do is ask bubble gummers like you what the best head for a “street“ engine should be.