I have the these brakes on my 48 f-3. I'm not sure what they are from. The brake shoes that were on it when I got it were from a 68-72 F250. You can see the e-brake lever with a short of "C"shaped end. What will attach to it? When I look up the brake cables for the 68-72 f250 the end of the cable is a small ball like most brakes I've ever seen. Is there a piece missing? Has anyone seen this type of lever arm?