Hi again, the steering coupler is attached between the gear box and the steering column. One end has a fine spline and the other a double d end meaning it only installs one way at that end. The box end is splined. The coupler is located in a recess above and behind the box, its almost hidden in a recess in the firewall. I usually drop the box by removing the three frame bolts and with careful inspection you will be able to visualize the allen screw at the box end of the coupler. The other end may require removal of an interior cover plate at the floor, don't remember exactly as the early ones may be different. If your not real careful you can get the steering wheel out of sync when re-installing. There is a 12 mm plug that will need to be removed and there is a bolt with a pointed end that installs into the box and locks the box in center position for install. Pay attention to the coupling position on the box input shaft so you can repeat the location exactly. Have a nice day
Bill