2013 Prius C Stero upgrade question

Hello,

Ok i'm new to this forum but i have a question. I currently own a 2013 Prius C Grade 2 with just the stock cd player. Now what i would like to know is if i got my hands on a Grade 3 head unit with the nav and the satellite radio, could i just connect it and it work? Is all the wiring there with the antennas needed for xm and navigation? Any help would be awesome. I would rather not go the after market route, i'd like the usb connection and aux to still work. I'm also sorry if i posted this the wrong way

Thanks