For future reference.
I think the year listings of the rebuilders are incorrect.
I believe 82s and 83s are the same,but,.84s are different.
In 84 they added an altitude compensator that opens up the air bleeds when driving in high thin air.
This necessitated the addition of 2 vacuum lines to the spacer under the duty(pulse) solenoid..
84s have a spacer w/2 vacuum lines.82/3s have no vacuum lines.
I suspect that the spacer is the only difference between the 2 versions and could be swapped as needed.
Or,plug the lines and an 84 carter weber becomes an 82
Or,leave the altitude compensator disconnected when running an 82 carb on an 84 car.
Confusing point here is that the FSMs call both versions TYF 7419S.I suspect this is incorrect.I have other info that suggests 84s are TYF 7629 or 7569.