You can still find old school radiator shops, look in the older/seeder parts of town.
Old school radiator shops are fast disappearing in these parts. I suspect that the labor cost associated with dismantling, rodding out, and resoldering would make purchase of a new radiator the better option.
I still want to save this radiator, which is out of the car while the engine is being rebuilt, mainly because of its original appearance - curvy fins and all. I do have a couple of junk radiators to practice on and will make a go of this project. Thanks to all for the thoughts and suggestions.