Yes I think they are probably the slider calipers as opposed to the pin-type.
Is this them? (RAYBESTOS Part # RC4104)
If so, according to Rockauto:
CHRYSLER CORDOBA (1975 - 1979)
CHRYSLER LEBARON (1977 - 1979)
CHRYSLER LEBARON MEDALLION (1977 - 1979)
CHRYSLER LEBARON S 1978
CHRYSLER LEBARON SALON 1979
CHRYSLER NEW YORKER (1979 - 1981)
CHRYSLER NEWPORT (1979 - 1981)
CHRYSLER TOWN & COUNTRY (1978 - 1979)
DODGE ASPEN (1976 - 1979)
DODGE ASPEN CUSTOM (1976 - 1977)
DODGE ASPEN SPECIAL EDITION (1976 - 1977)
DODGE CHARGER (1973 - 1976)
DODGE CHARGER SPECIAL EDITION (1973 - 1978)
DODGE CHARGER SPORT 1976
DODGE DART 1976
DODGE DART SPECIAL 1976
DODGE DART SWINGER 1976
DODGE DIPLOMAT (1977 - 1979)
DODGE DIPLOMAT MEDALLION (1977 - 1979)
DODGE DIPLOMAT S 1978
DODGE DIPLOMAT SALON 1979
DODGE MAGNUM XE (1978 - 1979)
DODGE MIRADA 1980
DODGE ST. REGIS 1979
PLYMOUTH CARAVELLE (1978 - 1979)
PLYMOUTH DUSTER 1976
PLYMOUTH GRAN FURY (1980 - 1981)
PLYMOUTH GRAN FURY SALON 1980
PLYMOUTH SCAMP 1976
PLYMOUTH SCAMP SPECIAL 1976
PLYMOUTH VALIANT 1976
PLYMOUTH VOLARE (1976 - 1979)
PLYMOUTH VOLARE CUSTOM (1976 - 1977)
PLYMOUTH VOLARE PREMIER (1976 - 1977)
If so the anti rattle clip is available - RAYBESTOS Part # H5218