The factory GPS antenna is above the dome light.
I removed the bracket, and added a little bit of metal for a XM antenna mount.
I was going to just place the antenna in the area, and fill with padding, but this is more elegant, and gives the antenna a metal plate for the magnet to stick to - which should help with the reception.
It works, so well in fact, that it works inside my garage with no issues
Fist pic is the modified bracket, 2nd is after install, and third is all the crap in the rear.
