I bought a 2015 Diesel Cruze in November of 2015 with 23 miles on it straight from the dealership. It now has almost 17k miles. My boyfriend & I are considering upgrading the sound system in it. Of course it has the touch screen, but no navigation. I'm not worried about Navigation anyway considering my cell phone map will get me where I need to go. Has anybody done an upgrade? I've searched on here, but haven't found much info. I know I'll need a dash kit, head unit, subs, & an amp. I'm not good with car audio, but my boyfriend is. But this is the newest vehicle either of us has had. Any suggestions from anybody who has done this? Will I lose my hands free calling?