[guruerror]

Assuming that your talking about a CB...here's what I did:

1. Removed the OnStar unit and mounted the control unit for a Cobra 75 WX in the dash (hidden)
2. Mounted the handset for the Cobra 75 WX on the side of the console
   
   
3. Used a piece of angle iron to construct an antenna bracket on the rear tire carrier
   
   
   
4. Replaced the FM antenna vent with a 2003 vent (no antenna mount)
   
   
5. Routed the FM and CB attenna cable to the rear of the truck (using one of the FireStiks for FM) and exited throught the power grommet used for the license plate light
6. Mounted two FireStik antennas on the angle iron
7. Routed power (for CB and other peripherals) throught the large grommet in the firewall directly behind the parking brake

Hope this helps.