75 version of the track by Motorfx. Also available with more info & pics @ rFactor Central. Extract the "70stracks" folder to Game Data > Locations & allow to overwrite.
I have chosen to leave "Thumbs data" in the zip file. This track is uploaded here primarily for the use of members of RD HistorX Racing Club and therefore does not come with any pics. All RD users are, of course, welcome to make use of this resource.