I kept going on the engine today. The thermostat has been replaced, and I’m glad I did it because the one in the car was a very incorrect 195 degree one! The correct factory 180 degree one is in there now. I cleaned all the paint off of the aluminum housing, installed the new crossover hose with new clamps, and did some other cleaning and painting such as to the oil fill tube. I also added in my new wire looms and started fitting the lower radiator hose.