Is this the same webasto unit I see for sale. I know a couple of mfg. use these webasto roofs in their cars from the factory. I was just wondering if porsche is also doing the same with the cayenne. Take a look around this website http://www.webasto.us/press/en/am_au...oofs_3641.html because if they are using this you can do the panoramic roof after market. I actually know of a guy here who saved 1100 by not getting the moon roof and had one of these installed.