Meeting was fun!
Only the pics I took are too dark, so it's difficult to see the nice things.
Tried to get a speedocable, didn't get it
So, I made my own from the original and a Chevy Van cable. Hope it works...
I only got the outer cable of the truck and a complete one from the Van.
You can turn the white drive square of off the cable, thus you can make the innercable at the right length.
Plan was to grind the nut or swivel of off the original cable and connect it to the one from the Van. I connect the two to push a 8mm rubber hose over the two parts and set them with hose clamps.
I did it so that I could slide the original nut to the desired length of the inner cable. Not too tight or too loose.
Next to the truck it works okay
So it looks like this:
Screwed into the speedometer:
The speedometer was turning a bit heavy, so I used WD40 to get it loose.
Don't know if it can hurt the speedo, but it went into the drive unit where the cable connects...
Did not test it yet, we will see if it works.