I have a Garmin nüvi® 3790T with LifeTime European maps.
I would like to use Navigator North America NT 2013.20 on my nüvi SD-card. (without touching the original maps on the device)

Do i need D3191060A.JCV - GMAP3D.IMG - gmapsupp.img files on my SD-card in the map /Garmin to have North America with Junction View & 3D maps?

thanks!