I no longer need the rad tanks. I will be using the original/rt side tank. I sweated the tank off the original radiaror, and was able to remove the dents. My parts supplier up the street, (thanks Albert) had a left side tank in his vast Chevelle parts inventory.
Monday, I will be off to the radiator shop for a core, then the Elky motor should be ready to fire, for the first time in MANY years.