I just bought a GPS unit (KNAG510) for my kenwood HU (KVT717) i havent installed it yet but has anyone else tried this combo out? any comments? i'll take some pictures asap...

 

I have the KNA-G510 with a DDX6019. The combo works relatively well. I like the small form factor of the nav system. The SD slot for updates is also useful. Check Garmin.com, I already updated the Nav firmware once. I wish the nav have a speed sensor though...sometimes when I am in an area without sat signal (e.g. an underground parking lot), the system gets confused of my position. Overall I think it is a decent nav for the money. GL on your install!!!