Here's a shot of removing the bolt buldge, tubing so you can still oil the rockers via the heads. This effectively pulls air over to that side of the port/bowl/chamber and allows a much better ST shape on that side. Those heads flowed good, around 310-315 cfm at .700 lift.
https://www.motortrend.com/uploads/...-runners.jpg?w=768&width=768&q=75&format=webp