carb choice??

Alright guys wat do you think on how many cfm's for my carb??
-67 440 hp 40 over
-closed chamber heads
-ross racing pistons
-13.18 to 1 compression
-roller rockers
-crane cam (have to check the specs)
-forged crank
-edelbrock torker 2 intake
supposevly 550-600 h.p.