1969 was a big year for the Ford Mustang. Not only it received a significant facelift, but the pony also debuted three historically important models that year: the Mach 1, Boss 302, and the Boss 429.

Some classics are left untouched, admired like museum pieces. Others get transformed into unapologetic modern machines. This one falls squarely into the latter category. Still, the continued growth of ...