In 2019, NASA and Toyo Tires announced new placement requirements for decals in spec classes. The new location requirements were enforced at the 2019 NASA Championships presented by Toyo Tires, and now that the 2020 season is upon us, they also will be mandatory in regional competition.
Proper placement will be necessary to ensure you can collect the many contingency prizes offered by Toyo Tires. You can find specifics on the NASA Forums thread