There is an aux in adaptor available that connected to the cd changer input. I got mine from blitzsafe.
I thought about putting the empeg above the cup holder it looks like there would be enough room but there isn't really. If you modded the down tubes for the width the area under the climate controls is at a sharp angle. Also there isn't enough room to be able to pull the empeg out.
Do you have Harmon Kardon or not ? According to
this guy they have an adaptor so you can replace the factory head unit if you have the nav system.
What I though of doing was replacing the glove box with the parcel shelf that is available outside of the usa but I couldn't find anyplace to buy one.
I don't have the nav system but I do have harmon kardon I finally just decided to replace the factory head unit and have the appointment next week to get the empeg installed.
If you have harmon kardon the amp and speakers would have to be replaced if you did put the empeg in there.