The most valuable Mustang ever recently sold for $3.74 million. It appeared in the greatest movie car chase ever, featuring Steve McQueen in this exact Highland Green fastback, chasing the bad guys through San Francisco for the 1968 cops-and-mobsters flick, Bullitt.
Read the full article at Hagerty.com: https://www.hagerty.com/media/magazine-features/25-greatest-mustangs-bullitt/
The 390 GT is a great every man/woman street racer, but the only reason the Bullit is of note is due to the Steve McQueen chase scene. Otherwise it’s not of note.