Price of 8.75 option for 1967 barracuda

This was helpfull,to find an old catalog for 1967 dealer options and price is probably impossible. After the second spider gear failure,babyed the rear end and then gave up and bought a 68 RR. Problem was I didn't know an 8.75 existed,and since I bought the Barracuda off the lot it's obvious I didn't know enough about the car. This question has haunted me,if I knew then what I know now I would have kept the barracuda and gotten the 8.75 rear.