If Sam Cabiglio identified it as a "sports purpose" car ie a 1970 homologation / lightweight S back in period i would say it is 99% certain that it is.
The homologation cars were used as the basis of the competition cars but other "hard core" owners also used them for fast road cars - this one looks as it it is set up for that so the extra lights, in my view are not inconsistent with the lightweight concept, and for club sporting events
