Large Port Commando on a 340

so they are just ede heads with new pushrod holes filled and redrilled for offset

Not exactly.
The pushrod holes aren’t “filled”, they’re just drilled offset from the start.
The heads also come with 5/16” stem 1.60/2.08 valves.

I’m pretty sure Johnny Mac(?) is running them on his motor.
I seem to recall he had a thread on them a couple years ago.

Brett Miller has a new cnc program for the Ede SB head that flows in the 300 range...... and since these are really just Ede SB heads....... I’m sure that program would work on these heads as well.