Not seeing any license plates.
score-international.com/raceinfo/rule-book/car-buggy-classes/class-11/
No copy/paste for you and me; but basically stock, with nine cross-referenced rules that affect everybody [helmets]. Front and rear suspension get three paragraphs each of permissible modifications.
For instance you can fill the speedometer cable hole in the left front spindle.
And the thumbnail says '...s 11 Final - Friday'.