I can't say absolutely based on part number. Based on upholstery pattern and the seat track foot sticking out that these are "F" body seats out of Volare or Aspen '76 - '80?. Seats are likely the same as offered in some "M" or "J" bodies like Cordobas or Diplomats but tracks may not be.
B body Cordoba had button tuck leather buckets. The cloth buckets in later magnums had adjustable head restraints and chrome euscutcheons on the upholstery. Definitely an F body pattern.
I can't see the tracks to tell. Late b body ???
Legendary years back actually had pics of their products. But ten they don't cater to anything made after 71? excpet maybe A body!?