At a minimum, I think it is safe to say that the VINs in between JF172220 and JF172275 are all part of DSO #74-0005. Those two VINs are confirmed as being in that DSO, so the Special Equipment Parts List can be used to confirm the cars in between. Here is a page I made using that information -
http://www.specialservicemustang.net...info172265.htm
I worded the header that way (Agency Usage is Unconfirmed) since we do not know whether it was used in-service or not. Then there is a notation under the picture. Does that page look OK?