11 Unless you have one of the dual braking system line kits from Classic Tube, you will have to fabricate your own lines. Again, use coat hanger wire to establish a path from the master cylinder to the distribution block and proportioning valve. Bend your lines from the coat hanger template. Lines you pre-bend yourself make it easier to install. The forward reservoir and cylinder connect to your Mustang’s new adjustable proportioning valve. The aft reservoir connects to your Mustang’s front brakes via the distribution block.