The 350 cfm is far too large. Problem is the relatively large venturi/carb bore, matched with the cfm of the motor. Not enough air velocity to make carb work well. It would result in some of the problems similar to what I had when a 600 cfm carb was on my low compression, performance cammed 292. Mismatch.
If you can live with a manual choke (my preference), look for a 2100 from a 60-64 F-100. They are easier to find than you might think. Numbers would include C0TE through C4TE. Example of C1TE would be from a 61 truck. C2TE 62 truck. You should be able to find a good carb for 30-75.00. I bought a rebuilt 2100 with 1.23 vents, 350 cfm, just to try out, for $50.00 on E-bay.
On the side of the 2100s, cast into the body inside a circle is a number corresponding to the venturi size. The carb you are looking for in this instance would have the number in circle of 102, meaning 1.02 vent. You could also use like I said a .098, which came in Falcons powered with 260 motors. Think that was also in the 60's.
E-bay is the easiest place to shop. Before bidding be sure the seller IDs the vent. size. Rebuild kits are available at your local auto parts shop. You can rebuild it yourself. Use e-bay search terms of Y-block, or Autolite 2100, or just Autolite. A carb found at a salvage or crusher shouldnt cost more than $35-40. If they want more look somewhere else.
I bought a Y-block at a crusher yard not long ago out of a 64 F-100. Have been usiing its C4TE, waiting the correction of compression. One thing I did was drill and tap the carb to manifold adaptor so a PCV hose could be attached. The only other vacuums I have are for the distributor, which attaches to a carb fitting on the 2100, a vacuum gauge to the manifold, and a windshield vacuum line T's into the vacuum gauge line.
Poney Carburetors sells rebuilt 2100's and 4100's starting at $349.00. They are referred to as Poney Baloney.

How about an introduction?

__________________
46 1/2 ton with 56 292:thumbsup: