Gen 2 Prius (Audio/Electronics) :: 2007 - Navigation System And Bluetooth Transplant?

I recently posted that I was purchasing a low mileage 2007 Gen2 and had been told it was a base model. Actually, the seller was clueless about the options and had only had it for 3 years. Didn't know what a "Package/Type" was.

Before I got out of the driveway I discovered it did have the backup camera. However, as I began reading through the owners manual (my first operational Gen2, with a manual) and programming the radio and a few other features, I discovered that this was a Type 1 with backup camera. But soon discovered from the display and steering wheel that it lacked the Blue Tooth and Hands-Free ability. Something I have been wanting. I could live without the Nav System since I have a good system on my tablet that I take with me from vehicle to vehicle. Not sure how good the Gen2 Nav System is but have used it on my sons 2010 Gen3. Seemed ok but I'm hearing that you have to subscribe to the Nav software or is that just for updates?? Or is it just a couple CDs that I need to find??

Now that I have learned a little more about these systems, I looked at the two other Project Gen2s that I have and discover that a 2007 tired old (300k+ miles) Yellow Cab has both Nav and Bluetooth.

So, the obvious question is, are these Gen2s all prewired for the Nav System and Bluetooth and aside from the transfer of the Nav ECU from one vehicle to the other.