[tower]

You absolutely need to pull the center console to swap head units. A lot of steps, but fairly easy if you don't lose small parts. I definitely prefer my Nuvi 680 and former 660 to the '05 factory nav. Data entry is much more user friendly and logical, but it is easier to steal. At least you won't get your dash trashed. Plus, you can enter data on the fly. I don't really like the old factory nav units at all. I'm clueless on the '08, but it sounds nice.