Yes, that GVN52 Garmin unit will work.
It ourputs composite video and analogue audio

You can connect to the TV tuner AV-IN
Then to view the nav, you go to Television, and change channel to AV

Or you can add an external video adapter to create an independent AV-IN function. Then to activate it you need to use a switch.

If you use a video-in-motion module you can then mix the nav audio with the rest of the car using say the phone interface.

Or you could modify the radio module and add an extra audio input for the nav, mixed with all other audio sources. Electronics knowledge is required.