Would a 2007 Versa wiring harness and install kit for an aftermarket cd deck work in a 2008 Versa?

No website I've seen has any information on whether a 2008 Versa can even get a aftermarket cd deck installed.  My girlfriend and I both bought Versas, 2007 for her and 2008 for me, but I checked at Circuit City and Best Buy, and they both say that there aren't any parts for the 2008, like the wiring harness and installation kit.  But, they do have both for the 2007.  I need to know if they are the same, but the Nissan dealership doesn't know.