Highest flowing sbm heads?

Ultimately I'm not trying to pick a fight or anything. I respect what work people have done and most of you have done more than me, I'm just trying to learn and think about what is next for my next build. I would just like to know what heads out there are capable of say 350 cfm or more. Either they exist or they don't.
350 or more cfm?

Edelbrock Victor
W9