I put my antenna on the roof and covered it up with a shark fin
Here are some picks from the install:
This
Sirius kit I bought, it works great and at the time was the least expensive.
SoundLinQ2 kit...
Here's the center console almost completely removed...
Head unit removed...
I ran the antenna wire through the trunk under the rear seat...
Trunk...
From the rear seat I ran the wire under the plastic molding...
From here I ran the wire under the carpeting and driver seat...
I used two plastic shirt collar inserts to insert the wire behind the rubber molding that's around the back windshield...
I also hid the Sirius antenna with a VG Shark fin, you can see more pics and info
here...
I installed the SoundLinQ2 and Sirius tuner on the passenger side under the airbag (there is enough room there so that it stays out of the way of the airbag and it keeps the tuner static free since it's not near the head unit)...
I mounted the two units using double side heavy duty 3M tape (keeps everything on solid and no vibrations)...
Here's everything back together...