1962,948 cc.
The part is called, a "Ferrule Pin", a "Barrel" or sometimes a "Clevis" Pin, but basically it's the chrome like round fitting that the accelerator cable passes through on it's way to the carb.
It seems to be secured with some sort of split-pin or circlip, but it's hard to tell as this seems to have fallen off.
I attach a picture below, the part is numbered, "44".
Where can ID get one of these?
Best wishes[frame]