Issues with Steering on 1965 Valiant V8

With the pitman arm removed from the box go full left than count the wheel rotations to full right.
Next split that difference. The steering box should now be at center also called high point
The pitman arm has a master spline that will align with the master spline on the steering box.
As stated above now look to where the tires are pointed. If not straight ahead you will have to adjust the tie rod sleeves.This may require disconnecting the tie rod end till the left and right side are looking about the same.
Now you will have to set the proper toe in. I'm sure there are plenty of posts on how to set toe so I won't get into it.
Next will be checking the steering wheel to see if the master spline in the upper shaft matches the steering wheel master spline.Many times the steering wheel is forced on screwing these splines up. Now that's on a factory wheel.
Aftermarket steering wheels do not have a master spline.If everything is set you can set the aftermarket wheel to the straight ahead that requires moving a spline or 2 to get it straight while driving.
Last is checking the master spline on the lower steering shaft to see if it is aligned with the master spline on the steering box. Hope this helps.