So I have a sunroof on my 2003 and I want a flat rack that ends right behind the sunroof keeping it clear. Has anyone mounted a rhino rack platform on a 4th gen? Is putting it on factory crossbars the only way to mount it? I swear I have seen one mounted somehow. We have a rhino rack on our 5th gen so it would be nice to have the same rack on the 4th.