in reply to my above question and after much much searching, i found this track included in a track pack for a "days of thunder" mod found on gp4-argentina, you have to download the trackpack as it only contains the wad files for the tracks, then you need to download the NON-csm 0.9 mod where you'll find the dat files for the tracks.
hope this helps any other modders wishing to have this track.
note: i found when driving this track that the dat file is such that the car performance (using normal 2001 cars) the gearing is based on a nascar setup.