I have a cell phone antenna located on the rear glass behind the driver. I plan to mount the CB antenna on the side of the tool box. Will there be any problems with the two antennas. Where are you guys coming in the cab with the coax cable. I have all my wires and the boost line coming in at the big grommet with the big wire harness (on firewall) and don't want to use this locating. Afraid I'll mess something up. Drill a hole in the firewall or come thru the floor?. Thanks for you patience. Old Man 2001 3500 ETH/DEE (sorry for the long post) Happy Holidays to all.