1966 barracuda

I don’t understand what you mean by move the box to the center? with the wheels straight, the masterspline is at 12 o’clock on the st box. With the mark on the coupling lined up the steering wheel is 90 degrees off. I think I will take the coupling off the column I removed and see if it will go on 90 degrees out so the steering wheel will be straight. Idk really no room to get in there due to header.
Was everything lined up before you made changes? Is the steering wheel on the column installed correctly? Toe alignment?