This is the location we decided to mount our Cobra 148 GTL ST CB Radio.  
CB dash mount.jpg (42010 bytes)
CB dash mount 2.jpg (55695 bytes)
We had to remove the plastic Electric Switch cover that had no function on our Soft Top Defender.
Power Mic (make you transmit cleaner and further)
CB power mic.jpg (50012 bytes)
CB external speaker.jpg (30604 bytes)
External Speaker mounted on Roll Bar on Driver's side up high.
Our Antenna mount with Quick-disconnect that holds the 5 ft. Firestick Antenna.
Notice that a 10 gauge ground/drain wire is mounted to the aluminum bracket for proper SWR settings.

GULF COAST ROVERS
CB antenna mount.jpg (46563 bytes)