Head porting

the numbers u see over is after the porting i described. We didnt get the airspeed down, still just over 400fps. the flownumbers are up ca 20 cfm on the higher lifts, but the flow began to turn at .550 . we found that the port Areal had to be just over 2"^2 , will might help on the higher lifts, and airspeed if i open even more.. pls come with a comment,