Okay, it started with a gasket replacement and escalated from there. Gasket replaced, thermostat housing replaced, fan belt replaced and manual throttle control installed. And, everything works.
The paint dried and I reinstalled the floor panel over the transmission. That lead to another small item - new transmission shifter boot covering. The original was barely big enough and it was showing signs of stress - the rubber boot was in three pieces. Luckily, the local Pep Boys has the next larger size of universal covering in stock. Perfect fit.