Mine did not have the in-dash changer. It's an XE.
As for the changers in general, I don't see the point these days. If you buy a CD player that supports MP3, you can fit as many as 6-10 albums on a single disk.
I highly recommend buying the unit from
Crutchfield. You'll get the installation instructions and all the cables and mounts you need to simply plug and play. Crutchfield can tell you what fits in the vehicle and they can do it right on the web site.
If you have questions, call them up or use their online chat or email. They are VERY responsive, knowledgeable and helpful.