Discovered in Philly, this 1969Ford Mustang SportsRoof 302 V8 has sat idle since 1987- can it gallop once more?

That Mustang sparked not just a passion, but a family legacy. Since then, the Andersons have been a Ford family — one that speaks the language of muscle cars.

The coupe SUV has become a central part of the automotive industry. How many automakers offer this bizarre crossover? Where ...