Dealers to install Sirius Xact

I bought a Sirius radio over the summer. It's an Xact model, meant to be mounted in the car on a
swivel-type bracket. I don't plan on using the Siruis in the house, so want to mount it permanently in my 2006 Prius - maybe in the map department under the radio/CD-changer?

Does anyone have recommendations for getting this work done at a dealer in Northeastern PA, or in the NYC Metro area?

Any suggestions welcomed!

Real World Mileage - 140 Mile Round Trip Commute -

Highest - 54.3 MPG
Average - 51.3 MPG