Just got Sirius the other week and am in the slow process of hard installing it into my V70R. Well, at least from a wiring perspective, as there's really no where to put it. I have the factory Nav and I can't put it above the vents or it'd block the Nav. Right now I have it stuck on the windshield, but I'm gettting to the point where there are no wires sticking out at least.<p>In any event, I have done a good job of routing the antenna wire all the way to the back of the car, out the hatch and onto the roof. I have the newer low profile antenna. I was searching some previous threads and I noticed that someone had installed the antenna underneath the parcel shelf in an S60 (I believe).<p>My question is can I open up the rear trim and stick it on the underside of the roof of the wagon? Being an R there are no roof racks or anything on top to mess with the signal. I seem to recall that Sirius tells you to leave 6" of space all around the antenna for better reception, so you know that the roof is doing something. Or will this totally block my signal?<p>Let me know your thoughts and any ideas for hard mounting the unit itself. it's a sportster R, so it's pretty big. <p>TIA.