>> I doubt they would be in good position defending themselves in court allowing this
Where do people come up with this stuff? Arbitrary rule. Every sport has them. These are the rules of the game. There is no issue to be taken to court. Fastest Street Car classes weren't allowed to have lettering/decals on the car body. Arbitrary rule. Hey, maybe you could sue NHRA for allowing something in Stock that's not "stock".
Equally as ridiculous.