Try'n to behave
Join Date: Aug 2012
Location: Ft. Lauderdale, FL.
I don't know about the part numbers, but that looks like the underside of my seat. Same type of attachment points....
I ride an '81 FXWG. Let me know what your asking for it, because I might be interested in test fitting/buying it if it works.
Edit to add: BTW, I am in VA too. Virginia Beach to be specific, and retired Navy.