Your search for "1969 firebird vibration dampener brackets" revealed the following:
SEAT COVER, REAR, STD INT, 67-9 FB, 2 PCS, SPECIFY COLOR
Regular price $100.00Seat Cover,Rear,std Int,67-9Fb(2 pc. specify color)
DASH GLOVE BOX DOOR, 69 FB, LESS LOCK, USED
Regular price $50.00Dash Glove box Door, used, less lock, 69 Firebird, Trans am
DOOR PANEL HANGER ,FRONT TOP 68 69 F-BODY
Regular price $29.00Door panel hanger or clip, front upper , used, fits either side OE# 8712662 Fits: 1968 1969 Camaro Firebird
TRANS CROSSMEMBER, 400, 67-9 FB, w/TH400 TRANS, USED
Regular price $190.00Trans Crossmember,400,67-9 Fb,w/TH 400 trans, used
FIREWALL WIRE HARNESS GUTTER, PLASTIC, NEW
Regular price $7.00Firewall Wire harness plastic Gutter, repro OE# 97843301969 Firebird
BUCKET SEAT SPRINGS, BOTTOM 67-9 CAMARO FIREBIRD
Regular price $75.00Front bucket Seat Spring assembly, bottom ,fits either side, each new Fits: 1967 1968 1969 Camaro Firebird
QUARTER TRIM PANELS ,DLX HDT NEW 68-9 CAMARO, COUP BLACK
Regular price $55.00Interior Quarter Trim Panels, coup deluxe ,unassembled , pair, repro, Black Fits: 1968 1969 Camaro Firebird hardtop
CONV HEADER BOW SEAL, 67-69 F-BODY, WITH MOLDED ENDS, 3 PCS
Regular price $59.00Conv Header Bow Seal,67-69 Fwith molded ends,3 pcs
HEADLIGHT BEZEL ,RIGHT INNER USED 69 FIREBIRD
Regular price $40.00Head light Bezel, passenger side ,Inner,used, stamped & OE# 9796578 # 2 FITS: 1969 Firebird