What programs are you using for gps and music? Did you wire the sound into the sound system yet? I thought about a touch screen and may still go that route due to in-cabin noise, but am working on voice control right now. I have a 14.1 inch LCD screen with a custom 850mhz AMD computer. 30 GB HD, DVD, GPS, LAN and wireless keyboard/mouse combo. I'm reworking the center console to hold it all. I did a trial run of the Mojave Road with my setup. Three days on washboard roads. Only problem was Windows Media Player would crash every 50 songs or so. I'm using Mapsource for GPS and that was pretty cool.