Currently in a 2013 with nav and considering going to the 14's nav as its a little cleaner and has HDMI. Is this difficult? I see post for nav installs on non-nav but not nav for nav
Could you send a picture of your current dash? From what I understand, the '13 and '14 have a completely different dash. I also believe your model is the older HondaLink system which has a different harness compared to the '14.
Top is your system:
This is the 2014 HondaLink:
Looks like the only two connectors they share is the GPS module.