Hi Eric,
I am trying to determine the difference in the 1963 Jetfire carbs that show 4 part numbers where the 1962 carbs only show 2 carb numbers. I have been under the impression that the change in design of the fuel bowl/float cover is the difference. I have seen both styles of float covers on 1963 set-ups. One does not have the “chimney” on the cover and is like all the 1962’s that I have seen and one does.Which if any of your three carbs have the chimney?
