emergency brake help

Model T

New Member
I have what I thought was a TCi chassis 32 Ford with disc brakes front and rear. I am trying to hook up emergency brake . TCI told me 2000 Explorer used for backing plate and shoes for emergency brake . They are 7" dia and the rotors I have are 10.5 " with a just under 6" emergency drum inside.
I understood the rear end was a 9" Ford . Can you help me with what I need to get for the emergency brake setup. Thanks for your help.