Adding Factory CB Option to 86 ZN1300 Voyager

Is it possible to add the factory optional CB unit to an 86 ZN1300 that did not originally come with the CB option? If so, which bits are required? I'm thinking:

• CB Radio module. Is that part of a different AM/FM radio module? Seems like it is in some eBay ads I'm seeing
  
• The channel display module
  
• mixing module, for mixing cb audio with radio
  
• Left hand fairing switch panel
  
• handlebar switches???
  
• CB antenna (or is the AM/FM antenna used)?
  
• Intercom stuff - I think the CB option included an intercom?
  
• miscellaneous wiring

Are there other bits?

Is it all 'plug-n-play'?

Thanks for any advice.

In the absence of any information here, maybe you could ask on the americanvoyager forum.