So... after new rims and tires, new steering coupler internals and completely rebuilding the front suspension... all in the hopes of making my squirrely Challenger feel like it wasn't about to run off the road at a moments notice... it turned out that the biggest change came from a couple turns of the screw on the steering box.
Goodbye white knuckles when-driving-through-construction-areas-with-uneven-road-surface-and-concrete-barriers-a-couple-feet-to-the-left!