19. 1968 Shelby GT500 KR: $110,000

In 1968, Ford introduced the 428 Cobra Jet engine, and Shelby was about to use it in his line of Mustangs. He wanted to do something unique, so the result was the GT500 KR. The “KR” stands for “King of the Road.” They rated the 428 Cobra Jet at 335 HP. But, everybody knew that the engine delivered more than 400 HP and 400 lb-ft of torque.

Ford limited the production to just 1,053 of them. Also, the GT500 KR was full of interior trimmings and luxuries. Recently, one of them sold for exactly $110,000.

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