Your search for "1969 firebird vibration dampener brackets" revealed the following:
REAR SPOILER, REPRO OF ORIGINAL
Regular price $110.00Rear Spoiler, new, Reproduction, 69 F body, 69 Camaro Firebird
CONVERTIBLE TOP CYLINDER, NEW 67-69 CAMARO FIREBIRD
Regular price $150.00Convertible Top Cylinder, repro hydraulic piston, each, fits either side Fits: 1967 1968 1969 Camaro Firebird
PILLAR DRIP MOLDING, LH, 67-9 F-BODY, HDT, RUNS WINDSHIELD PILLAR, REPRO
Regular price $12.00Pillar Drip Mld,LH,67-9FHDT,runs widshld pillar,repro
SEAT TRACK EXTENDER ,NEW 67-69 CAMARO FIREBIRD
Regular price $99.00Bucket Seat leg extensions, driver side seat ,new repro, extends seat 2" further back. extender bolt to floor, then bolt seat...
SUNVISORS, 69 CAMARO FIREBIRD, COUP, USED
Regular price $38.00SUNVISORS, 69 CAMARO, FIREBIRD COUP, USED
QUARTER TRIM REINFORCEMENT, LH, 68-9 F-BODY, CONV, STEEL PANEL, USED
Regular price $70.00Qtr Trim Reinforcemnt,LH,68-9Fconv't, steel panel used
RAM AIR PAN SEAL CARB, 69 FB TA RA, 4 FOAM, MOUNTS ON CARB PAN
Regular price $59.50Ram Air Pan Seal,carb,69Fb,TA,RA 4, foam,mnts on carb pan
KICKPANEL SPRING, 67-9 F-BODY, 68-79 NON KICKPANEL DOOR, USED
Regular price $16.00Kickpanel spring,67-9 F,68-79Non kickpanel door, used
TRUNK LID LETTERS , "PONTIAC", USED 67-9 FIREBIRD
Regular price $29.00Trunk Lid or Taillight panel,emblems, "PONTIAC" letters, set, used 67 68 69 Firebird