I don't have a free part, but how about some free info lol? You're looking for the small metal clip with nylon nut attached the screw threads into, correct? I looked in the Ford parts book, I don't know what the original part number was but it looks like it was superseded in 1973 by part number D3AZ-13021-A. That part was available new from Ford in a package of 4 until at least 1989. I did a Google search of that number and there are tons of places with new ones available. Here's a link to some, there's more:
http://www.rearcounter.com/D3AZ-13021-A-parts224137.htmlNow...I don't know if Ford made any cosmetic changes to the part in '73 when the # changed or not. It may fit and function and but look different. If it's important that it look exactly the same I would ask someone to send you a picture first before you buy. Also, if you buy any of the NOS ones be sure and shop around on price, these shouldn't be expensive, but prices can vary wildly on this stuff.
Some more handy info - Ford lists that same part as being used on many '65 and later Galaxies, '67 to '75 Fairlane's and Torino's, '67-'71 Thunderbirds, '71-73 Mustangs and '73 - 77 F100 to F350's. That should mean there are millions of used ones out there, and give some other places guys can look to help you out with some used ones. You might want to look at your truck and see if it uses the same part and also see if the design changed.
Also with that many applications I would try checking a good auto parts store or body shop supply, like in the "Help" parts section, you might find them there. Hope this helps.