What happens when you change from Ford's twin I-Beam front suspension to a solid axle? One thing that happens is the turningcircle gets larger. This means your turns are not as tight as they once were.
The diagram on this page illustrates how turning diameter is calculated, and the table shows that for a given wheelbase, the Quigley 4x4 conversion gains about 1.5 feet on average. The left turning diameter and the right turning diameter are not always the same; therefore you must calculate it as an average of the 2 turns.