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The carb you have looks like a Ford EBU. It is made by Holley, but has the Ford oval. It was introduced for the '54 Ford 239 Y-block and carried over to early '55 cars with 272 Y-block. I believe they originally planned to use the new Holley 2100 (very similar to the EBU) at the beginning of the '55 model year, but Holley couldn't produce them fast enough, so they installed EBU's on the early '55's.
Your original Y-block had a Holley 2110 (ECG) which was used on all the '56 Ford Y-blocks (except 4-bbl intakes had Holley Teapot). The ECG had larger venturi's and all had automatic choke.
You can buy one rebuild kit that services all three (EBU, 2100 and 2110), but some of the parts are not best quality and I personally don't like the waste of gaskets not needed. Those kits are available from Daytona Parts and many of the repro parts suppliers (probably exact same kit Daytona sells).
Sources I use for gasket sets are:
Dicks Hot Rod Carbs
Kens Carburators (Ken Isidor)
Mikes Carburator Parts
My favorite is Dicks. I can get individual gaskets, power valves, accellerator pumps and sometimes other parts that the other carb specialists don't offer.