It sure would be nice if you could simply go down to your local auto parts store, belly up to the counter, look the parts guy square in the eye, and say, "I need a radiator hose for a 1940 Studebaker ...
When buying a new hose, don't forget to buy new hose clamps. They should be large enough to fit the outside diameter of the hose. Clamps are so inexpensive that you should make it a habit to replace ...