Not Ranked
I have used Holleys and fought the jetting for over 30 years. What a pain!!
Last spring I changed my neighbor's Lone Star (427 s/o, 750 cfm) to use a Holley accessory called "adjust-a-jet". It goes between the fuel bowl and metering block, and uses NO JETS AT ALL. A large adjustment screw, readily accesible at the top of the carb is calibrated so that a certain # of turns = a certain jetting. A chart is provided by Holley, and it is a snap. His worked so well that I put a pair on my Holley 750 (428 CJ), and can tune to a given altitude or track in seconds. They run about $180.00/pair from Summit, Jeg's, or PAW.
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