Max horsepower with EQ heads?

Hi, i think these heads can go around 300 cfm if treated right. If i remember correctly Jim LaRoy did a set that flowed this much....Imm´s cnc version of the Indy X-Head was somewhere around 295 between .600 and .700" Lift - but no longer available. I think around 600 HP is possible NA, but not 675. The Victor head would be a good choice.

Michael