I don't believe there s a cable available.
You may check with Sierra Electronics and see what they may be able to do. There was a change in CB manufactures prior to 2012.
I believe one unit could be adapted, but the other could not.
Worst scenario would be to buy a New CB and sell the old unit and recoup about 1/2 the investment. That's what I did going from 2005 to a 2016.