[Lew Silverman]

I think the blueprint specs list the "authorized replacement" carbs for each engine combination, Bobby. The accepted products list aftermarket units that have been approved for certain combinations. If you notice there are venturi and throttle-bore sizes listed in the blueprint specs, so if, for example, you had a later model Motorcraft carb with the same specs as the one listed for your vehicle you are allowed to use it. The Quickfuel carbs that were approved as replacements for OE Holley's fit about 99% of the combinations out there, but I'm unfortunately still a 1%er, the smallest they have is a 585 CFM!!