427 Cobra rear suspension and Spicer half shafts

[my427cobra]

I have a number of questions about the 427 Cobra rear suspension and the Spicer half shafts.

So here goes:
1) The vertical distance between the rear upper control arm and the rear lower control arm inner mounts on the frame is about 9.5”. Right?

2) The vertical distance between the rear upper control arm and the rear lower control arm outer mounts on the upright is about 12.5”. Right?

3) So the upper control arms and the lower control are not parallel. Right?

4) With the car at rest, is the lower control arm parallel to the ground?

5) If not, what is its angle?

6) If the lower control arm is parallel to the ground, the upper control arm would slope upwards 3” to the upright.

7) In this old rear suspension drawing

it appears the Spicer half shaft has the slip yoke(internal splines) on the inboard (diff) side and the splined shaft(external splines) on the outboard (upright) side. Is this correct?
I ask because all the Spicer literature I’ve read suggests the slip yoke is usually used on the outboard side, a reverse of what is used on the 427 Cobra. Anyone know why?

8) If the lower control arm is parallel to the ground while at rest, that would make the half shaft slope upwards to the upright about 3” like the upper control arm. Right?

9) How much “slip” takes place in the Spicer half shaft during up (est. 2”) and down (est. 2”) motion of the rear suspension. I’m guessing about 1/2". Close?

If anybody can set me straight on all this I would appreciate it.
Cheers
Greg