Just to repeat what Dave Hope said, I used to race this mod on Race2Play, back when online simracing was in it's golden age. The sims are better, but there is still a hole where R2P used to be, but remembering this mod helps!
I remember years ago nogrip had an P&G aussie league. I have many fond memories of that league. Winning Bathurst in a mustang was the highlight. This is by far my favorite mod for GTR2, it was such a labor of love and the community really got into it.