Yes, Rabtech knows what he's doing. I never doubted it. He's rebuilding his sound system to better suit his needs. Some folks want more power out of the engine, some folks want better music some folks want more customization and I think Polaris is working on ways to increase luggage space and much more aftermarket stuff.
As for me, my budget doesn't allow me to change what I have already paid for. Besides, I think the stock SS sound system rocks. And Monday I will have proof as to whether the Victory Harness will work. As far as the radio speakers are concerned, I only listen to them if I'm cruising through town at low speeds. When I go cross country I where a pair of high end Klipsch earbuds that seal out all ambient noises and I get Zumo, turn by turn audio dirrections, Mp3 music, Xm music, or listen to an audio book. If I get in areas where I need to focus more on my riding skills, then I hit the mute button.