I may have made a mistake. I looked at the thermostat I installed during the summer and it has a 195° opening. I bought a replacement 180° stat. We will see. All of my gauges appear to be working correctly. The instrument lights are still not working.
A disc-brake conversion with coilover kit is about $1500-1800. I'm fine with the drum brakes but I want better springs and shocks. I found a set of lowered springs for a few hundred bucks. I will be taking out the seats and sending them to a shop in the next town to be re-covered. In the meantime, I'll install the spare carburetor I bought, put in a new 13-lb (stock) radiator cap, and probably replace the wagon wheel tires with some higher quality radial tires.