Hey All!
I've had my Sirius Sportster since September but had recently cleaned up the install a bit.
I'm running with a PIE AUX adapter and just using the shipped Sprotster mounting bracket. I bought a $5 12V outlet from Radio Shack and wired it to the spare cigarette lighter plug that is under the 4Runner console. (where the stock 12V outlet is). I shoved the new 12V outlet down under the center console and wired the antenna, RCA cable, and power cable thru a small hole I drilled into the cupholder section. If the Sportster is removed from the car, you will never see the hole because it faces away from the driver.
I didn't really want to mount it with the Panavise style mount as I thought it would get in the way of my passengers. I just placed it in the cupholder section and decided that I liked it there.
Here are a couple of pics. Sorry for the quality, there was a lot of sun shining this morning.