help needed on e-brake parts

hi can anyone help me with information on some rear e-brake levers on the rear of my 69 cuda 8-3/4 rear i was missing the mounting arms to hook up the e brake, found some on e-bay recevied them was cleaning them up and checked and they do not seem right the top of the arm has a hook and all the photos i see show that it should be a pin to mount it to the back side of the rear brake shoes, i took the part numbers off the levers one is 628 58691 11178 and the other one is 629 58691 30181, any idea what they be from , i have just sent a e-mail to the person i bought them from to see if he can help. thnaks for any information:oops: