Tomorrow I will install the Z110BT and I purchased the Pioneer CD-SB10 and the SIRIUS SCC1 TUNER.

I have a Cadillac CTS and for Navigation I always mount my GPS antenna in the center of my dashboard. For the Sirius antenna can I mount it in the same place or will I have to mount it in the exterior of the vehicle? I would really hate to mount it in the exterior of the car so hopefully in center of the dashboard right in front of the windshield will work....

What do you guys think?

I have the Z100BT installed in my Toyota Solara. I have the navigation antenna mounted on the front of the dash , just below the bottom of the windshield and the Sirius antenna mounted just behind it. I have been going like this for over 2 months and haven't had a single issue with either one. They both get great signals.