For anyone who is paying attention ot this thread. Here is my experience so far.
I purchased one of the Nissan Xterra ipod interfaces for my 2005 Mo with non-Bose stereo locally at a dealer (courtesynissan.com) for about $20 more than it would have cost from yournissanparts.com. They offered me the on-line price from the parts desk and I bought it on impulse.
It does indeed work fine with my non-Bose head unit and dashboard display. However, I do find navigation somewhat difficult. First, The dashboard display does not have enough width to display all the titles/artist/etc and this causes confusion with names which are similar because several entries can show up exactly the same. Secondly, navigating through large lists is tedious with the knob. Third, so far, I find the steering wheel buttons almost useless due to the 2 second delay built into them. You have to hold down the buttons for about 2 seconds before it responds. This too make navigation slow and tedious. Finally, it wouldn't matter if the iPod display and buttons worked while plugged in, but they don't.
I haven't researched it in the forums yet, but I'm going to take a look at the Neo Ion which apparently allows the iPod controls to continue to work in parrallel.
Larry