Thought I would post this for anyone in need. The heater hose outlet tube that presses into the block is part # C5AZ 8555 B according to the parts guy at Ford and he didn't have it either. I tried many places to find such tube including NAPA as some suggested. My local parts store chains couldn't find it anywhere. I decided to try one more place I that never visit O'Reilly Auto Parts. One of the guys there got out a parts book (yes a parts book instead of a computer) and there is was in the book. Murray part number 84716 and even had it in stock too.