I think just about any 1-barrel carburetor with mounting bolt center-to-center spacing of 2-11/16" will work reasonably well. You may have to get creative with the throttle/choke linkage though.
One thing to be aware of is that Ford intended their carburetors and distributors to work together as a system, and replacing just the carburetor might have negative side effects.
Your distributor probably has vacuum advance only, without any centrifugal advance. Those units require a carburetor with a "Spark Control Valve" that supplies a combination of ported-manifold vacuum & venturi vacuum to the advance unit. This was called the "Load-O-Matic" system.
If you try to use a newer carburetor & connect a Load-O-Matic distributor's vacuum advance unit to its ported-manifold or manifold vacuum source, you probably won't get enough advance at wide throttle openings and high RPM. Idle, cruise, and accelleration at low RPM might not suffer too much, but sudden accelleration probably will.
I haven't experienced this firsthand. I usually change the distributor AND the carburetor together. I once performed a DuraSpark conversion that kept the original carburetor with it's spark control valve, but didn't use the original vacuum source on the carburetor. I plugged that and connected the distributor directly to manifold vacuum. I would have preferred ported-manifold vacuum, but the carburetor didn't have that provision ... not without modifying the spark-control-valve circuit, anyway.
That being said, maybe the benefits of using a more modern carburetor justify the disruption of the Load-O-Matic system. Plenty of people have installed an incompatible carburetor and appear to be satisfied.
Load-O-Matic carburetors:
The Autolite 1100 was used on these engines near the end of their production run. The same carburetor was used in 6-cylinder Mustangs until about 1968, so you might check out the Mustang forums for recommendations. I do know from personal experience that these carbs were tempermental. I've got one that was rebuilt by Holley that seems to be OK, and wasn't too expensive. A company in Las Cruces, New Mexico, called Pony Carburetors (
http://www.ponycarburetors.com ) claims to re-engineer them to work much better than new. From what I hear, they're pretty proud of them ($200 w/core, $300 w/o core), and deserve to be.
The Holley 1940 was a service replacement for the Autolite 1100, and performed better. I've seen this carburetor listed in the Rock Auto online catalog for my application (223, 1963 F100). Tomco is their supplier.
Manual Choke: TOMCO Part # 187R
Automatic Choke: TOMCO Part #1102R
I also believe that the Holley 1904 was used on the 223 until 1962. I don't know much about that carburetor except that International Harvester used it too, only without the spark-control-valve.
//JimK