I wanted a "clean" CB installation on my bike which meant that I didn't want to change tank consoles for the rider headset connection, didn't want a tour pak on the bike for the passenger headset connection and PTT/Vol. controls, and didn't want a tour pak-mounted or rear-mounted CB antenna.
The HD Boom Audio Music Intercom Kit, p/n 77108-09, solved all of the major issues, except for the CB antenna. The J&M in-fairing antenna arrived about the same time that I did the BAMI kit install, but I hadn't had the opportunity to test it in a large group ride until yesterday. The antenna installed is shown on J&M's website:
http://www.jmcorp.com/ProductDetail.asp?ProductID=FPA-HJCB&PF=43The CB with the J&M in-fairing antenna worked great. I don't know the max range of this combination (and surely it will be less than a tour pak/rear mounted whip), but it worked great communicating with the sweep for clearing intersections, changing/securing lanes on interstate-type roadway, and other communcations where the range was typically 1/4-1/2 mile and, perhaps, one mile at times.
For my purpose, i.e. group riding, this antenna works very well.
If you have an Ultra and you want to make the tour pak detachable without losing the CB function or adding an alternative CB antenna rear-mounting location to retain the CB function , the J&M in-faring antenna is worth a look. Or, if you don't have a tour pak on the bike regularly and would like to have CB without the hassle of connecting a CB antenna at the rear of the bike, this antenna may work well for your appliation--it does for mine.