Carburetor question

I have a dart with a 340 that is said to be bore and stroked to a 416. I am installing a ld340 intake and want to get a Edelbrock avs carburetor. Question I have is would a 650 be good or should I go with the 800? This will be a street car with 3.55 gears. I was told it has a 540 lift cam and it has a auto with a reverse valve body if this all helps with advise. Thank for the time!
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