Group A racing ? 
No, the GT1, GT2, GT3 classes. Back in the mid to late 90s and early 00s, the latter two were filled with Porsche 911s and BMW M3 factory teams, plus hordes of privateers. The GT1 classes was stacked with the heavy hitters, 911 GT1, Merc's CLK GTR, Ferrari 550s, Viper GTRs, Corvettes, Mclaren GTRs, Ferrari F40 LMs, BMW LMRs, Audi R8s, there was no way that the Nissan GT-R could compete in any field, it only did "okay" a few yrs, but basically, in international racing Godzilla was a bitch, that deep throated everybody to the balls and was bent over afterwards...bascially it sucked ass.