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This is the brake and clutch master cylinder from the International truck. Chad was happy about discovering this part, since it is a single unit that operates both pedals, it looks appropriate to the period and style of the Model A, and it mounts in an easy-to-reach spot under the floor. After determining the proper mounting height (to keep the reservoir cap below floor level) and position (parallel to the pedal assembly), he built a pair of brackets to mount the master to the frame between the boxed stock 'rail and the recently added X-member. Another advantage to this master is that it has a threaded port for a standard diaphragm-style rear brake light switch (arrow). The disadvantage is that, mounted here, it faces away from the pedals. But, Chad had a plan.