Hello - I'm trying to install my Sirius Sportster 4 into my new 2011 Toyota Camry SE without navigation. I can easily use the auxilliary power and auxilliary inputs beneath the radio but I'm concerned where/how to run the antenna. I would rather not switch my subscription to a different Sirius radio as I have the lifetime subscription and sometimes use the Sportster 4 in my boombox in the garage.

I've read about the "Complete Sirius Install Kit for Factory Toyota, Scion, Lexus Vehicles" but that seems a little overkill for my needs (and I already have a Sirius vehicle antenna - but would it be possible to use the factory XM antenna?)

Any help is much appreciated!