Jeff, yes the car was initially setup with Thermactor/Smog, but someone has removed it over the years and it is currently not installed.
The information below regarding the proper radiator setup is excellent. Thanks for the details.
One other question, until I can setup/locate the exact radiator as you indicate below do you have any suggestions for a temporary radiator to use in the mean time? Looking for something I can at least install for now, that looks somewhat proper, and works well for cooling. Spring is almost here and currently this is the one thing at the moment holding me back to get the car out on the road to enjoy.
Appreciate the advice.
John