Seems the CB system installs similiar to the intercom system. Intercom may be a little harder because you have to run the harness to the rear for passenger connection vs the CB which does not require this.
Yes it is expensive, but what isn't? I bought the headsets $300, the intercom module (wiring) $300, the Overlay harness and XM module (ebay for $350, a real bargin) and the new GPS interface $120. Intercom came with the left control asm (black) so off the lower half went to Chromemasters, $22.05, the GPS HD handlebar mount, $64 and off to Chromemasters $90. Just never stops. The hardest part was pulling the PPT wires thru the bars, We pulled the PTT button wires only, used the existing SERG wires for everything else. Have no idea what dealer would have charged, took 2 of us about 3 hours to install it all. Then have to take bike to dealer for intercom flash (free) which I haven't done yet. Tomorrow hopefully.
Don, you can handle it in your sleep.