Okay than...

1955, 3100, 235, 3 Speed, Stock

Starts right up with just a little choke.

Runs well at low speeds.

Stumbles and dies at highway speeds, difficult to restart.

Truck sat for a number of years.

I have replaced the:
Plugs
Coil
Consider
Cap
Rotor
Fuel Pump
Fuel Filters - One before the pump; one after the pump, just before the carb
Fuel lines

When running, you can see fuel passing through both filters.

Kits seem to be running about 150, so with bucket $200.

Can't find a YF!

Found a rebuilt Rochester, $329.