Think youve missed the point pal , i was actually trying to be helpful .
GpA describes a set of regulations that were enforced , like Formula 1 for instance, its too commonly used by people as a "motorsport Added tax " way of screwing more money out of the un-knowing !
As for "too much of a pain " if £100 quids worth of easy mod to stop your car driving like the Jelly moulds they are as std ,is too much then wait for the expensive bits !!
Good luck .