Easiest way to move from a factor to aftermarket stereo
2009 Kia Optima
Crutchfield Customer Review (What's this?)
I have been using these kits for years to move from 4 and 3 inch factory stereos to 2 inch DIN stereos. They make the swap easy and also provide a nice slot to hold cell phones and iPods.
Pros: Easy to install and they look great after install.