Here is a used steel quick change 3rd link/upper link mount. Good shape.
Quick Change Upper Link 3RD Link Pullbar Torque Link Bracket IMCA UMP USMTS #5
Quick Change Upper Link 3RD Link Pullbar Torque Link Bracket IMCA UMP USMTS
Quick Change Upper Link 3RD Link Pullbar Torque Link Bracket IMCA UMP CAR #47
9" Ford Quick Change Upper Link Pullbar Torque Link Bracket IMCA UMP
Quick Change 3rd Link Pullbar Torque Link Bracket WINTERS FRANKLAND IMCA UMP 61
Blue Aluminum Quick Change Rear End Pull Bar / Torque Upper Link Brackets J1