The Toyota name will be a target of officials all season.
Every top team in every race series manipulates the rules or flat out cheats. Its a part of racing.
Also, there are no true “factory” efforts as you see in formula 1. Teams are affiliated and supported by the manufacturers, but "Toyota " didnt cheat. A team that builds these archaic machines that just happens to have a toyota emblem on the hood got caught doing what they always do.