Does anyone have a GPS speedometer in their jet? I saw a Nordskog gps speedometer in a magazine today. The description said it also has a tachometer, compass and voltmeter built in. Where does the receiver for a GPS speedometer mount? Its a digital unit. Im thinking about getting it so i could have an in dash speedometer, tach and voltmeter all in one. That would free up on gauge hole so i could add either a water pressure or oil temp gauge.