I've not seen a set of Tailgunners on a RocketIII. I look forward to seeing the conclusion of your efforts. If you've not seen them yet, consider Predators. I must say they are the most awesome looking alternative to stock piping and the performance, from all I've heard, it's not simply remarkable.
You say you're in SoCal. Might you run into inspection station/registration issues without a stinky Cat box on board?
Definitely the TuneBoy is far above and beyond the PC when it comes importing customized performance tunes. While it is true that Dyno tuning is limited to the use of a PC, there is only so much that can be had with it's use. There's also a means to have your cake and eat it too. A certain individual, here on the forum, will rent a PC for a very attractive low dollar cost. This will enable you to import a Dyno tune, derived by means of the PC, into you Tuneboy enhanced Rocket. This is itself a very important value, I hear, over in your neck of the woods. PowerCommander just paid a huge judgement in it's defense of modifying left coast emissions standards. An attached PC is a red flag, while TB is not an attached piece of hardware; it's indiscernible. With a TB Tune, the readout is ONLY seen as an authorized base tune. So you take a SoCal authorized base tune and jazz it up.
It is my considered opinion, most often I'm the only one considering it

; that, without eliminating the "log" (a colloquial assignment), or in my terms a "major choke-hold", of the three into one (regardless whether you have 1 or a dozen muffs to follow).
was that not a run-on I guess "log" is more succinct, but in any case: by regulating the Rocket to 93 octance you've not explored AVgas, oops another thread...The log has to go to open the beast up.
Listing bikes? If you like. You can add them to your signature line or you might simply add them, or not, to your profile. Whatever blows your skirt up