Highest flowing sbm heads?

It looks like Crower's website doesn't show them for the W5s, but a man might call them and see if they still make them. Jesel shows them in their catalog and I couldn't find the T&D catalog (they want you to fill out a form to order or call them).

I ran the jesel sportsman series rockers on my W5’s( believe I was the first to do so)….Ryan and others at that point were not aware the heads needed shaved around 250 thou to bolt the stands to. Had never seen those before.
the geometry is excellent, those are still in use to this day, btw.