Want the most power from a square bore, run a Holley anywhere from 600-750. A 318 would run well with a 600 cfm.
Carter/Ede carbs are decent, usually pretty easy to get running. They just don't seem to put down the power that a Holley does. Run away as fast as you can from a 750 ede...
TQ's are good but really finicky in my experience with them. Won't bolt straight up to an air gap without an adapter.
