2. Mercury Cougar Boss 302
They conceived the Mercury Cougar as a luxury pony car, building it on a stretched Mustang platform. This meant all the engines they installed in the Mustang could easily fit into the Cougar as well.
In 1969, Ford introduced the Boss 302, and Mercury got its own version too. They called it the Cougar Boss 302. Strangely, Ford didn’t widely advertise this highly-capable pony car, so it remained obscure. Mercury produced just 169 of them, and it’s a mystery how many have survived to this day.