I tried posting this info yesterday, but FTE went down.
The Ford part number for the master carb kit is: AOA-9590-A
If other sources can't help you try joblotauto.com.
Still can't find it? Try North Hollywood (CA) Carburetor & Ignition, the area code is 818. This place is amazing, and has a large stock of carbs and parts, dating to the 1900's. They used to do work for Harrah's Automobile Collection.