Originally Posted by
losiglow
Ultimately I'd still say figure out a way to get an aftermarket deck or amp in there, but some people don't want to go that far. It's really pretty easy to do. I don't know if there's a difference in wattage between NAV vs. no NAV, but I doubt it.
There is really no separate HU. The NAV and the radio are pretty much one unit. It even integrates into the display on the top of the dash.