Ed,
That is the same year as my chassis. I have used this site to find parts, but it will not usually tell you availability until you select a dealer and then you usually have to call them as they have the real system.
https://parts.ford.com/en.htmlPut in your vehicle information and look under Fuel system- Fuel Chassis, it is known as the Pipe-Fuel part. Part #: 9A322
I noticed is there are 5 of them depending on wheelbase. (wow, another reason not to get a RV factory chopped custom wheelbase) and that there is a sister part 9B337 that has 5 depending on WB also. Maybe it is a follow-on # for the same thing and your parts guy insisted on the original #???
fred