Yes it is, and our privilege.
Three cheers for diversification in sports car competitions! Or exhibitions if you like that word better. But whatever it was, I like it ever so much better than watching bloated shadow cars pretend to be divers makes and models, just as I dislike Meccano models that call themselves "Yachts".
Give me a Ferrari and a Porsche and a Corvette and a Saleen any day.