OK, finally got E-III back from the shop yesterday and started fitting the sound system.
The Sirius radio mount went on in nothing flat. It puts the radio just to the inside of the left hand switches. Looks great.
I spent about a half hour playing with the location for the speakers and finally settled on a spot. Then my mind says, I'd better see how this fits with the Corbin fairing. Oh sh$t. Not enough room. Ok, move the speakers out to the end of the bars. Nada, no room, no joy. I've got to figure out where I can mount the speakers so that they don't interfere with the fairing.
Might be a brand new set of Kury speakers for sale soon.