If the VIN starts with JHMBB226 or JHMBB216 it will be a 4WS. The difference between the two is the tranny type. The 226 has an Auto-Tranny, the 216 has an Manual-Tranny. If the VIN starts with JHMBA24, JHMBA814, it will be an "S" model. If it starts with JHMBB225, or JHMBB215, it will be an "SI"