@RiggityJ,
I could tell you that is the Torque Rod and it goes to the firewall. But it looks like T-Matt took the words and videos right out of my mouth.
If anyone can steer you right on this subject its ‘ole @ToyotaMatt
devo
When my balls and sockets got sloppy and dangerous as @ToyotaMatt stated, I made the swap to his very nice and golden linkage parts for my 1981. It made a big difference at the pedal to have have a tight linkage setup.
devo