I've done a number of track conversions, from rFactor to GTL & GTR2. If I could get a version of that track, I'm sure I can sort it out.
Sorry, have no idea about GTR2, I think I had GTR1 really many years ago, but I think disc got lost already more than 5 years ago and I never have done any modding to that game.Wonder if you could also improve the GTR2 version!? Sure there's lots of stuff that could be made better there as well!? Just saying. ;-)