IDK for sure,
but I think they must be. The VB's are the same. The vehicle bodies are the same. If the carbs are both 4bbls then I believe they would have to be.
The final say in the matter is if they both push the TV arm to full back, synchronized with WOT.
I have seen several different kinds of TV arms; really short, standard, and long, plus offsets, and with or without nylon or plastic bushings.
I have seen also several different kinds of carb rods; short/long, inside/outside ends, adjustable and not,and various bends.
I have seen several different systems of transferring the motion from the carb rod to the TV arm.
So, after all these years, there is no telling what is on your car.
One thing I do know; If one of your cars has the right system, it will work on either tranny.I think.