The Bluebird and the Altima were the same when Nissan first released the Altima (the Stanza replacement). The Japanese hated it, so it was redesigned for the Japanese market. Now the Altima is much larger than the Bluebird and the Altima is U.S. specific as is the Maxima U.S. specific. Japan and the rest of the world get Teana as the Maxima. The Teana replace Ceferio. Expect an all new Altima for '07 and it is going to be an upgrade from the current one.