Clutch fork/linkage assembly questions

[R.O.B.]

67 C20, 350 v8, 4sp.

As you can see by the picture, I don't have the right stuff, I have a piece of all thread that should be a threaded rod. So, I can buy a rod, and from pictures on the internet I also need what looks like a spacer wedge.

Question: once I put the rod and spacer through the fork, what is on the other side of the fork? I mean, It has to allow it to pivot, so just a nut doesn't make sense in my head. Also, which hole in the fork? The small inner or the larger oblong outer?

I also saw in another thread something about a long and short throw out bearing? My current one looks like a short, yet it could be wrong as I've got barely any pedal. I've got the 3 finger diaphragm.