Not saying its true, BUT is very possible, as we trailer manufacturers, have to have our body's inspected and certified by the inspectors of the SABS regulations control section, on a number of issues on fibreglass body's, in fact on all body's, never mind what its made of.
This goes for body modifiers as well.
They inspect the glass, the lights, the seating, the door locks, the ventilation.
So this is possible..... Maybe contact the Kit car guys, they will know what new laws control their industry.
Best of luck....
Herman