Originally Posted by Coach 2
As long as the rally cars run among ordinary vehicles on public roads, they must meet all requirements to get the numberplates. This responsibility also falls on FIA. There is a big difference in building / customizing a car to Gr R, N, or the old A regulations, than to allow anyone to build a WRC car. Remember: the greatest fool is not born yet.
I seem to remember that if you wanted to build a kit car yourself, you had to use body parts that were only produced by the factory. For safety reasons of course.