2014 Prius 2 HU Upgrade

Hi all, newbie here with a couple questions. I'm brand new to the Prius world, just bought a 2014 Prius 2. It has the touch screen radio, but no Nav or backup cam. I know on other vehicles I have owned that the wiring harnesses were universal and worked with almost all of their upgrades, as in the wiring was present for the backup cam, and the antenna and such were the correct ones for SXM. Is that the case with the Prius line? I want to swap my basic HU for the Nav one to retain the factory energy and consumption screens, as well as the factory BT mic and such since it works fairly well.

Thanks in advance!!

 

Clarification...

My HU is a 57031. I'm looking to upgrade to either a 57034 OR E4070 if possible.

Thanks!!