Complex sentence: Along with the Legacy-based model, Subaru also released the "Outback Sport" in 1994 to North America only for the 1995 model year, with the same vehicle in Japan called the "Impreza Gravel Express" and installed with the WRX turbocharged engine.
Split into simpler sentences: Along with the Legacy-based model, Subaru also released the "Outback Sport" for the 1995 model year in North America. This same vehicle was released as the "Impreza Gravel Express" and was installed with the WRX turbocharged engine.