A Body Rack and Pinion Converison

I'm still trying to sort out the steering geometry puzzle, akerman angle in particular.
In earlier posts it was stated that this angle is incoperated via the attaching arm on the lower ball joint, and the differences between the left and right hand arms.
I ask you to look at eaby item number 380161464370. Those appear to be mirror image alike. I know the later model arms differ from one another. I guess my question might be when was the akerman angle incorperated and why.

Basic solution for proper ackerman:

Draw a line from the (centered) rearend pinion through the spindle.
The outer tie rod end, front or rear steer, should be on this line.
This is why you must never, ever use stock rear steer spindles on a
front steer rack conversion.

Basic solution for bump steer:

The tie rods must be the same length, have the same pivot points as
and be parallel with the lower control arms when viewed from the
front/rear or the top/bottom. They must move in complete unbinding
concert with each other.