Subaru launched the 2008 Legacy and Outback models at the Detroit show, and while it's largely business as usual for the all-wheel-drive duo, there are a few revisions that the Subie fans amongst our readership might find interesting.After its kid brother, the Impreza, has gotten a new face time and time again, the Legacy and Outback have now gotten their turn under the knife. Sheetmetal up front