Ford's Flat Rock Assembly Plant started building Mustangs upon the arrival of the S197 generation with the 2005 model year. Since then, it's churned out many variants, some genuinely outstanding, and today, on the Mustang's 49th birthday, Flat Rock is celebrating its millionth Mustang built.

To commemorate the occasion, Ford picked what it believes are the 10 best Flat Rock Mustangs.