2005 G6 v6 car audio

I have a 05 G6 with the 6 CD changer and i was wondering if theres a way that I can put a aux cord for my Ipod into the back if the original stereo. Id hate to have to take out the good stock one thats in it. Any help is appreciated.

here is a site that may help you. hxxp://replacementradios.com/

thanks for the help. very useful. much appreciated