Hi All, Just picked up a 2007 Base Prius and had the idea to replace the OEM headunit with and aftermarket in dash GPS unit. I read seawolf's excellent write up about the kenwood dnx6960. However, what other options are there? I checked crutchfield out and the selection is limited to a handful of undesirables. What other options are there? How can I determine which units will fit/work and which will not? Thanks!