Keven:
I'm pleased to hear you say that about the California models.
As you may know, I'm having a G5 shipped from California and one of my questions to the dealer asked about the differences. My concern was that revised computer maps might have been used to meet California's restrictive emission requirements.
Before ordering the bike, he asked someone about this and then told me exactly what you said, that is, the addition of a charcoal canister is the only difference with the California legal bikes.
While I have total faith in my dealer, your comment removed any lingering doubt I might have had.