Hi Larry, Hi Julian, thanks for the replies.
My interest was in staying with a copper core radiator rather than an aluminum radiator.
All of the hoses and belts were replaced 18 months ago along with the undercar tubes and the swirl and overflow bottles.
Hall does not have motors or blades at this time.
I really appreciate all the ideas and information all have provided. I will be doing my best to try all the tests mentioned here. I have family in critical condition in the hospital so my time with the PCar is limited right now. I think modern fans mounted in front with out modifying the radiator or modern fans behind and just extending the outlet tubes the required amount if possible sound like the best bet. Had hoped to change out the thermostat today with a RobertShaw 330-180 with brass sleeve, but I'm off to the hospital an hour away again.
Thank you for your interest and support!