This is the Adapter for the Willwood Master Cylinder. You can get the plans from the Tccoa how to guide, or e-mail me and I can give you the blueprint.
Here they are put together.
Here are the two pieces installed through the firewall. I had to break out the Sawzall to "modify the strut tower to fit the M/C in there. this exact piece fits perfect on the thunderbirds, but the AirBag equipped Marks have a different Tower.
Here is the part from an inside view. You can also see the steel Coplink (also specified in the how-to article). I Ran into another problem completely different from the T-birds and Cougars. The PCM is mounted EXACTLY where the clutch pedal goes. so I had to COMPLETELY rewire the car from the front harness back. Involving 57 wires, 114 different solder connections, LOTS of Heatshrink tubing, and wire loom. Next page for those details.