11. 2007 Shelby GT500 – $600,000
The first Mustang to wear the Shelby name in almost 40 years was the 2007 model. Conceived by the SVT department and the same folks who created the Cobra R models, the 2007 Shelby GT500 was something else. It looked mean with its aggressive design and multiple upgrades. The GT500 sounded terrifying thanks to the new 5.4-liter supercharged V8 engine delivering 500 HP and 480 lb-ft of torque.
This was the first production Mustang that broke the magic 500-Horsepower barrier, making it the most powerful muscle car at the time. With racing stripes on the hood, roof and trunk, four exhaust pipes, and scary rumble from the massive V8, the 2007 Shelby GT 500 would make Carroll Shelby proud. Of course, the performance was terrific, with 0 to 60 mph taking only 4.5 seconds. If you wanted the same one Carroll Shelby owned, which they offered at the auction, you would have to pay an insane amount of $600,000.