I just pulled one off a 93 7.3, not sure if they were used on the 6.9`s.
There was a thread about using these as an up grade. See if I saved that thread.
Found it, had it in one of my Folders.
It was an FTE Thread.
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) - 7.3 fuel system upgrade - this mod (if u wanna call it that) is used on pre-89 IDIs with the 7.3 (6.9s also probably). Reason i did this was i ordered the wrong return line kit and i was looking for a way to eliminate areas of air intrustion. While...
www.ford-trucks.com
Goat