I've been researching the M3 GTR 4.0 and I've found something wierd on the FIA GT site...
Last year at Spa the Schnitzer M3s of Nurburgirng fame competed, albeit under odd classification.
The official results document (found here
) classifies the BMW not as GT or N/GT, but G2.
What is G2?
The only thing I can gather about G2 is that another car in this class was a Porsche 996 Turbo, perhaps it is an invitation class...
Any help is appreciated.