The 2003 model was inspired by a S9 WRC2003 model, but this is not a WRC car.
It has debuted in 2nd round of SCCA, but unfortunately, in that year, Mark Lovell and Roger Freeman died in a tragic accident after the SS1 of Oregon Trail Rally 2003.
The Finn duo Pasi Hagström/Marko Taskinen joined the team, but unfortunately, Subaru USA Rally Team has withdrawn at the end of 2003 season, citing lack of manufacturer competition. Subaru USA have been absent from SCCA Rally during 3 years until its return in 2006.

Source- www.wrcwings.tech/2020/04/20/aero-review-of-the-subaru-motorsport-usa-rally-experience-the-early-years/