Trying to figure out what part do I need to attach the brake cables to the rear axel. I was told that the axel is from a '62 Ford.
Get rid of the factory cross shaft and put a modern cable with an equalizer set up. We do this on every S10 conversion.
Building on Coilover's advise, here's a place that I've bought a few cable setups from- https://www.controlcables.com/content/quadco/BrakeLayout_6_29_15_ver2.pdf