This is a 40th Anniversary limited production upgrade to the Shelby GT500. In 2008 Shelby American International planned to build 1000 GT500KR cars to be sold in the United States. In 2009, another 571 units in will be built this two year 1,571 production run matches the original 1968 GT500KR production run of 1571 KR’s. The car was powered by a 540 horsepower 5.4-liter (330 CID) supercharged V-8 version of the base GT500 engine with functional Cold Air Intake and unique calibration. In total, 1,712 units were produced, with the remaining units going to Canada, export markets and military sales.