Steering Column Install help???

On the assembly line, the wheels were set straight ahead. That put the master spline of the steering gear on top center. Notch in edge of coupler identifies that master spline location on top. Spline at steering wheel end on top. Knocking the split pin through is to the engine side of the coupler. They did have matching parts / spline sizes though.
The 2 studs that the column hang from are long enough to just start those nuts supporting the column weight and aligning it while the coupler is coaxed into its proper position. I don't bother with starting the nuts. Instead I stack shop manuals in the drivers seat under the steering wheel to get a good angle on the dangle.