Joe, what will it take to get 207 cfm on the intake/w 1.94 valves @ .450 and 155 cfm on the exhaust/w 1.54 valves @ .450? How much can be taken off the heads without shrouding the valves? At what lift is notching the cylinders required? Thanks.
 I looked at Mummert's "Street Port" numbers; intake meets/exceeds my goal, but exhaust less than 75% of intake flow. He did get 169 cfm exhaust flow with "Performance Port," but he used 1.60 exhaust valves for both.