The stock shrouds breakdown over time and are scarcer than just about anything else on the truck.
If you find a stock radiator that is nos, never used, or hasnt been used in 20 years or more, its probably junk...radiator shop told me the brass over time gets brittle and will kep cracking every time pressure gets put to it...fix a crack...pop, another forms. Running the keeps heat cycling them and that keeps the brass from getting brittle.
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!