I'm looking to have my girlfriends 03 altima made iPod friendly. I have removed the headunit to find no 8 pin din port or anything like that. I'm wondering if I could change the headunit to a later model that has the 8 pin din or maybe even an aux input. She really wants to retain the stock look of her stereo and really wants to be able to continue using the steering wheel controls. Any help is greatly appreciated.