Off topic, but what system are you guys using for your srius/xm. I love sirius, and was looking topurchase the SIR-PNR2, which I thought was plug and play into the HU, but it seems like if i was to purchase i have to purcahse the SCC1 and the USB interface? There is about 50.00 price difference. between purchasing, and I can even find used PNR2 units for 20.00 if I look good enough. So, basically, wha interface are you guys using. Also, on my wifes sport trak, we have the GPS antenna, and her sat rad antenna mounted in the dash, next to each other. No probs really, except when we go under stru