Just yesterday i went to my CB guy & almost challenged him to build a CB that would be placed in a remote place, like under the front seat with a detached head, ( sometimes called a motorized head or a remote head ), that could be mounted somewhere handy like the dash. He told me that it would NOT be all that hard to do, because a lot but not all of the CB radios face plates detach from the main unit so that they can be worked on, using longer wires to make the connections from the main body to the head unit should be possible. His only concern was that most of our radios knobs stick out quite a bit & may not be very aesthetic looking.
1 of my radios that i use as a spare & is very compact & made by Cobra https://cobra.com/detail/75-wx-st-co...aa-weather.cfm
, i made mine in a suitcase, so that i could just hand it over to anyone with a cigar lighter in their vehicle, but, it could be mounted permanently almost anywhere. This is the whole CB http://cgi.ebay.com/Cobra-Electronic...efaultDomain_0
My setup pix... by the way, there is a screw inside the mic that lets you boost the signal
Then i mentioned some CB radios that are being used in Australia are 5 watt radios & have detached head, but, may not be usable here in the USA.
i looked at some 2 meter band radios & many have the remote head unit, some may be modifiable to use as a 40 channel cb, i saw one in a jeep yesterday, though i don't know if that one had the modifications done to it
it looked similar to this
a European model has the remote head to, but, it may not be usable here either
there is a kit that is used on the Can-Am Spyder motorcycle that also has a remote head