WussPuss

Hello, I have imported a 2004 Toyota Soarer "badged Lexus SC430" fromJapan into New Zealnd. From all the "experts" there is no way to get Enlish speech/titles/touch screen buttons and New Zealand maps into the navigation system. Unless I replace the sterio system with a complete new one that does the lot. This I don't wish to do as it will signifigantly change the car. Any help out there?