Suggestions for navigation unit
 

Patience please, I am very new at this - to install navigation.
Looking for recommendation: replace the stock H3 basic radio with a navigation / radio combo, if there is such a thing?
Or, would it be a lot of money and should I just buy a Tom Tom or some other stand-alone GPS and put it on the dash? That would be easy, since I already have an aftermarket back-up camera sitting on the dash and 12V DC coming to it, so I could tap into that DC wire to power a stand-alone GPS.