One new MTC brand front engine mount kit, part number 1205994 or 514 120 5994 or 230-53001.  This fits:

Volvo 262 1976 - 1979
Volvo 264 1976 - 1979
Volvo 265 1976 - 1979
Volvo 760 2.8L V6 1983 - 1985