I Am Open For Suggestions???? 1. First How Many Garmin 's Installed In Our Trucks??? 2. How Well Do You Like Them In The Truck??? 3. Where Did You Install Them?? 4 What Models Are Best Suited??? 5... what Do You Think About The Model 378?? It Is A Gps With Sound And A Fish Finder All In One ???? I Plan To Use The Gps On A Trip To Alaska And The Fish Finder In The Boat?? Im Curious To Hear From You Guy's ??? Thanks Radar Doctor