My suggestion is to either Pm or call or email to Curtis Boggs, a contributing member here and a cylinder head genious.
Talk with him about his new Edlebrock Victor 24 degree with the Curtis Boggs developed and designed CNC Porting, done by him at Race Flow Development. I have bought one set and likely will be buying more when needing a great conventional head.
PM to
Cboggs
He can also sell to you the other heads you are looking at for a savings and can also work those if you need them worked.
Ed