My old R32 GTR runs most track days with the name super cars, ferrari 360, 430, 599, porsche 993, 996, 997 turbo, 996 & 997 GT3, 997 GT3 RS, 964 3.6 turbo, lambo's of all kinds ( not even going to attempt to spell them ), BMW CSL M3, aerial atoms, caterm, Audi RS6, whole gaggle of evo's and subies.
And to date the only cars that out perform the old girl are the Z06 corvettes, porsche GT2, Carrea GT2 and SR3 & SR8 radicals.
Has to be said though that the slicks made a huge difference to the car,there is not a lot of straightline difference ( except those bloody Z06 ) its through the twisties that my car makes ground on them.