Not sure if you are aware so this is just a PSA and disregard if you already know. The Cup 2 is an awesome tire, no doubt about that! But it only comes with 4-5/16” of tread, Super Sports come with 9/16”. Cup 2’s are more of a racing tire. They cost more too. But they won’t last more than a few thousand miles, which is probably fine with a lot of Viper owners that don’t drive the cars much.
I was considering the Kumho's since they were used on 2016 Viper ACR's and had really good reviews. Doesn't hurt that the prices on the tires are lower than most other brands and they are a streetable racing tire for use on track days and autocross without having to have a separate set of racing tires. Was wondering if owners of these tires are satisfied.