I used this head unit with a separate amp and speakers in a complete SQ installation (details here http://www.350z-uk.com/topic/50949-my-sonic-punch-install-by-sonic-frontiers/page__hl__%2Bsonic+%2Bfrontiers).
However, looking at this post, (http://www.350z-uk.com/index.php?showtopic=30112) it seems that this is all you need to replace the original BOSE H/U.
Cheers,
Dean