Ford Mustang 429 Cobra Jet Coupe
The third and final redesign of the first-generation Mustang appeared in 1971. Most performance versions continued for the 1971 model year. However, people gravitated towards the Sportsroof model, not the formal coupe or Grande (via Motor Trend).
That is why Ford only produced 11 Coupes with a new 429 Cobra Jet engine and four-speed transmission. Also, this is precisely what makes the car so valuable today.