[Kenth]

The 1964 outer carbs uses #30-3 .086" inlet valves and center carb uses #30-9 .101" inlet valve.
I doubt you´ll notice a difference with .086" valves instead of .101", but if you experience nozzle drip in the outers with .101" valves you will have to adjust floats a couple of 32´s for lower fuel level.