Hello Saline, I just researched the FM addition to CB which was news to me. Apparently AM will not be going away, and FM modules have been available in the past to convert AM radios to FM capability. (I have personally installed them along with many other types of mods). So don't worry about having to "nerf" your AM rig. It will be interesting to see how well AM and FM coexist on one frequency, for example Ch. 19. I have heard people with export radios transmitting on channel 19 using the FM mode, mostly people who own these big expensive export radios who really only know how to use about 3 controls on the front panel. Listening to someone transmit using FM just sounds like an undermodulated AM signal with distortion. It should be interesting......good luck.