1965 valiant /6 to 340 a833 and 8 3/4 rear swap

A B/E body four speed will have the shifter mount fighting for the same space as the crossmember hoop, or back between the seats in an A body.
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The F body brakes/knuckles will fit if you use '73+ upper control arms with the large ball joint, or a set of ball joint adapters.
Maybe it wasn't a cuda it was from, was a long time ago...

If that engine and trans is installed in the volare, shouldn't it work in the valiant?

Thanks again