What you can do is go to Radio Shack, Autozone, truckstop, etc and get a male 12 volt plug and put that on the end of the power wire of any CB radio and he can power it through any 12v power outlet on the truck. When he wants to move the radio all he has to do is unplug it. That way you cna choose any radio you want to give.
As far as the ant goes the mag mount is not practical on a truck as there is usually not enough metal to mount the ant. What works better is a quick release mirror bracket. This looks like a pair of vice grip pliars with an antenna mounting bracket on it.
Ant mount
12 volt power plug
Thos links are just to give you you an idea of what I am talking about.