Lovorsi gauges arrived ! the speedometer is a gps and includes the gps antenna which can does not require line of sight. also the tachometer display can be used to check engine conditions with a mode switch which is seperate. the 4 in 1 gauges is almost exact fit for the porsche tach but the other gauges are slightly smaller. now the trick will be to mount the gauges using the porsche friction method with the rubber gasket. this will require a modified gauge cluster faceplate! the gauges include a central wiring harness that fits onto the Mast motorsports drive by wire harness and most gauge inputs come directly from the ECU.