Issues with Steering on 1965 Valiant V8

there are several different arms, and many of them can be "made" to work, and all of them can "clocked" incorrectly (along with the shaft coupler, shaft, and wheel).

are you sure that you don't have something else binding-- ie the wrong center link and it's jammed into the oil pan in one direction. or a bent something or other and it's hitting the lower ball joint and preventing full travel?