68 Cuda P/S converting to 73 K-Member with Manual steering

I am switching from a 1968 K member , power steering box and steering column over to a 1973 K member complete with manual steering box , and a manual steering floor shift steering column .
I have my old power steering coupler , but there is not one on the newer manual steering unit .
Sorry if i sounded confusing ............... :)
I was thinking the 68 PS coupling wouldn't work on the newer 73 assembly

Donnie