I need new rear brake shoes on my 3600. I don't believe my '50 tow truck started life as a dually. I need new brake shoes (long story, but I pulled the drums to replace the wheel studs and found the brake shoes had completely come apart) but I'm not sure if the brakes are stock. Can anyone look at my axle and ends to determine if this is a standard 3600 axle? I need to know so I can order up some new brake shoes.