By Don Sikora II Note: The following story was excerpted from the October 2016 issue of Collectible Automobile magazine. Jeep introduced its original go-fast Grand Cherokee SRT8 for the 2006 model year. Powered by a 420-hp 6.1-liter Hemi V-8, it was available through 2010. An all-new Grand Cherokee bowed for 2011. It was about two inches longer … Continue reading Future Collectibles: 2012-2017 Jeep Grand Cherokee SRT8