Ford recently dropped this teaser of the S650 Mustang GT3 racer with the below caption!
"Ford Mustang was born to race. The all-new 500 horsepower Mustang Dark Horse, the most track-capable 5.0-liter V8 street-legal Mustang ever, is part of a broader launch of six new racing Mustangs that will compete globally in a variety of series & categories, including GT3. Testing for the global GT3 race car starts this week at Sebring. Keep your eyes peeled!"