Regarding the iPhone kit, you'll need this:
MZ360221EX MMCS iPod Cable = A$135
Yes it plugs straight into the back of your MMCS and then it's up to your creativity where you want the wire to reach.
If you go to Mitsu to do it they'll probably route it to your glove box. If you DIY, I suggest you do it like me and make it come out your center console arm rest lid. The wire will still fit through the gap the lid leaves when closed and then you can plug your phone in when you get into the car. Much easier to reach than your glove box. You can see this in my garage.
Once plugged in, your iPhone will immediately switch to iPod mode but will still take calls. In both the iPhone and iPod, you can go through playlists using your MMCS screen or the steering wheel controls.
The cable in its default form will NOT charge the iPhone. It will work on both iPhone and iPods (after 2008) but will not charge them. The solution is this:
Retails in the US for US$29.99