Tunnel ram street carbs

I have a big block dodge, 383 with a 440 crank= 426. Out of the box Eddy rpm performer heads and intake. Solid lifter lunati cam .544/.566 .243/[email protected] motor made 525 ho and 552 tq with AED 750. Motor used 630 CFM on the dyno. car will hav.e .373 gears and a 3400 stall 10" converter. I now have an old Weiand tunnel ram and am looking at a pair of EDDY carbs. Question is do i need a 500 cfm carbs or 600 cfm carbs? can some one please explain? I would prefer a pm and a phone call as opposed to typing.

Want vac secondaries with manual choke as well. I was told to go with the 500 cfm carbs then another buddy said 650 carbs? seems like a lot of overkill. Motor used 630 cfm so two 500 cfm carbs should be plenty?