The JML guys essentially took my 04 Porsche Cayenne apart to install a clarion nav and control system, speakers, wiring, amps, rear camera, radar, laser... it is perfect and seamless. They are patient with the process which gives the best results possible. i'm keeping this car for a long time and they've made it like new. Unreal sound. Great job with the custom work integrating everything into car as well - it looks as though it came from the factory.