Your search for "1969 firebird vibration dampener brackets" revealed the following:
TAIL LIGHT GASKETS, NEW, 69 FB, FITS REPRO, PAIR
Regular price $22.00Taillite Gasket, new, 69 Firebird, fits ,reproduction, pair
REAR DRUM BRAKE SPRING KIT, 67-69 FIREBIRD, 63-72 CUTLASS SKYLARK
Regular price $19.00Rear Drum brake hardware & Spring kit, new H7008 FITS: 67- 69 Firebird , ...
FRONT VALANCE BRACKET, CENTER, NEW 70-72 FIREBIRD TA
Regular price $45.00Front Valance center support Bracket, Triangular shaped ,repro OE# 480716 Fits: 1970 1971 1972 Firebird Trans Am Formula
SHIFTER KNOB BUTTON, w/BIRD, NEW 69 FIREBIRD
Regular price $35.00Automatic Shifter Knob button, with "Bird" emblem fits into center knob new reproduction Fits: 1969 Pontiac Firebird
CIGAR LIGHTER BRACKET ,70-81 TA FIREBIRD TA
Regular price $25.00Cigarette & Defog & power locks Switches mounting bracket, steel plate, used ,OE# 480027 FITS: 1970 1971 1972 1973 1974...
AC REAR BRACKET SPACER ,rear on intake 67-70 PONTIAC
Regular price $11.00A/C Rear Bracket Spacer bushing , mounts between intake manifold and rear of Y shaped bracket OE# 539509 Fits: 1967...
IGNITION COIL BRACKET, V8, NEW, 68-71 PONTIAC
Regular price $42.00Ignition Coil Bracket, all V8, new repro FITS: 1968 1969 1970 1971 GTO Lemans Tempest Grand Prix Firebird 70-71...
COWL PANEL GRILL, NEW, 67-69 FIREBIRD
Regular price $155.00Cowl panel vent Grill, steel repro, mounts between hood to windowshield FITS: 1967 1968 1969 Firebird
REAR UPPER SHOCK MOUNT, 67-9 F-BODY, EA, OVAL SHAPED, MOUNT SHOCK TO FLOOR
Regular price $30.00Rear Upr Shock Mount 67-9F eaoval shaped,mnt shock to floor
MASTER CYLINDER, DISC, 69 FB, CAST# 465, STAMPED GA
Regular price $120.00Master Cylinder,Disc,69 Fb,cast#465,stmpd GA