Subarus best-selling line adds a pickup-truck crossover for 2003, and gets a less-expensive 6-cyl wagon midyear. Joining Outback and Legacy sedans and wagons is the Baja, basically an Outback wagon with an open rear cargo bed. Outbacks and the Baja have a raised suspension and SUV-flavored styling, but all these vehicles share a basic 4-dr design with standard all-wheel drive and horizontally opposed engines. Four-cylinder models come with manual transmission or optional automatic. A 6-cyl engine powers these Outbacks: the VDC and H6 sedans; and VDC, L.L. Bean, and Outback H6 wagons, the last a midyear addition. The 6 cyl comes only with automatic transmission. Antilock 4-wheel disc brakes are standard on all Legacys, Outbacks, and Bajas. Front-side airbags are exclusive to the Legacy 2.5 GT and to all Outbacks except the base and H6 wagons. VDCs include antiskid/traction control. All Legacys and Outbacks get revisions to suspension and front styling for 03. And OnStar assistance is newly standard for H6 seda Minimize