This car had some variant of AC brakes installed. They do not look vintage to me, but could be a rip-off of the AC from that period.
They were hooked up to the hand brake. I am going to install the original drum brake setup, then some sort of rod system off the pedal to actuate the AC brakes.

There is that cream corn yellow again, argghhh. When I got the repaired item back, I painted it black - and forgot to take a picture of his pretty welding job. Not good as new, but should be OK.