I called a Ford dealer here in Michigan and talked to someone who knows a lot about installing Sirius in Fords. I was hoping to get an aux adaptor for the (non-audiophile) 6 disc unit in a Fusion SE to use both for a separate Sirius unit as well as an ipod... but they do not exist. He said that Ford has been promising since Jan. to provide an aftermarket Sirius unit, but it hasn't appeared. The unit would actually replace part of the back of the setero and have to be programmed. Apparently the stereo would have to be reprogrammed with some $7,854 part. It may be the case that the Aux botton is not activated without programming. I guess that the Fusion stereo unit is a Delphi unit as opposed to a Visteon unit in other Fords and they are slow. More surprising than anything else is that the guy said that in some cases (depending on the options you have) the air bag is actually looped through the stereo!!!!! So, you may get a suprise if you install aftermarket radios. WTF? I guess instead of working with people to have aftermarket stuff, they are saying, hey, forget you. This all kind of makes me mad, especially since they announced that the 2007 model will ahve aux inputs... and fog lights, as standard. The bottom line is that FM modulation is easiest, and otherwise I should have bought another brand.