Just more photos of what you need. The rubber hose just slips over the plastic elbow that is screwed to the box. Sadly, we've probably thrown away many of these over the years when we scrap a parts car. I suggest doing a parts want ad for "Fan Motor Cooling Hose and Elbow" and someone will have one.
Thanks for the pics. I have the inner fender out of the car, being replaced……look at the hack job someone did many years ago to replace the blower motor.