Rally odometer for the Mustang

What does $700 buy? A set of tires for a Miata? A round trip flight to some warm vacation destination? How about an electronic odometer with clickey mechanical digits? I bought a Brantz Retrotrip rally odometer and two speed sensors, one that runs off of the speedo cable and one that uses GPS. Now I just need mechanical timepieces and the dashboard of the Mustang will almost sort of look like one that one would find in an actual vintage rally car.