The radiator was replaced with a new Behr.
The Thermostat was replaced with a new - forgot the manufacture.
Smile - The engine was replaced with a used engine - so the water pump came with that.
The white smoke has not reappeared since that "cool" day in October.
BTW - the air conditioning is not functional - there's a Freon leak, so no reason there to over heat.
The temperature sending unit is in my hands ready to be replaced - I purchased that to address the "bouncing temperature gauge".
Thanks for your support and assistance.
Does a water pump stop pumping water - or do they just die by leaking?
To address the "actual temperature" - I don't trust the gauge - but currently - cold weather - reporting normal 100 degrees or so.
Comment: In the cooler weather - the engine runs great, and stays cool.
Thanks again.