This is what I have. I've tried to show the relevant bits, hope they're readable. This is the first speedo cable, marked "0826/66".
speedo_082666 by
Mike Edwards, on Flickr
The second speedo cable is marked MSD561, and it only seems to have the captive nut to hold it in place on one end, even though it refers to the above cable on the label:
msd561 by
Mike Edwards, on Flickr
The throttle cable is one I bought for my Sportshatch, hence the red. But it's not long enough for OHC engined cars. It's marked MTC370.
mtc370 by
Mike Edwards, on Flickr
If you need any more information please let me know. I can probably measure the length of the various cables.
Note: I don't have an OHV Viva to compare with, and it's a very long time since I worked on one, so I can't offer anything other than photos and numbers, sorry.