A company called Group Five has developed special Challenger versions that could be ordered through your local dealer. There supposedly will be a G5/S, G5/SC and G5/R - all being different "upgrade" packages. The G5/SC is a Supercharged version, but others will have enhanced brakes, suspension, exhaust, hoods, (possibly a shaker), and sway bars. In addition, some interior changes (not described) as well as bolder graphics will be offered.