^ Yep. Pull the top, pull the padding off the passenger side of the roll cage. Remove the 4 bolts on the triangular-shaped panel (14mm, I think), and that's where the factory locates it- through the holes on there.
Dumbass spoiler- put the antenna ON TOP OF THE PLATE!
Just making sure
Route the wires with the rest of the wires down the cage, under the plastics on the passenger side footwell. Remove the glovebox (push in on the sides, pull gently towards you), and route the wires behind there (not where the glovebox sits- under it would be a better idea
Then, remove the radio, and plug the connector in. Go to the dealership, have them Starscan in that you have satellite radio (I forget the sales code, but you'll need it!), and turn it on. Call Sirius, and have them send an activation signal to your radio. MAKE SURE YOU HAVE YOUR RADIO'S CODE HANDY BEFORE YOU PUT IT ALL BACK TOGETHER!
Enjoy! (You're welcome!) Mark W.