I've moved here from Boulder Co and did no realize how spoiled I was with not only with the club support, but also immediate parts availability. I feel so isolated and cut off here, although it is kinda of cool to have the only GTV6 around.
Although there is no direct support in SLO, you are relatively close to the Central Coast Chapter, which is more or less located in Santa Barbara, just to the south. There are several GTV6 owners there and the area that you are in is a haven for other Socal Alfisti to tour to; so keep your eyes open, you never know when you will see a procession of Alfas cruise through on their way to Paso Robles or Monterey.
The owner of Morin Brother's in SLO is actually an Ex-Alfa mechanic and he should be able to set you straight if you have any mechanical issues. I'm also pretty well versed with the mechanical bits as well.
The guys at German Auto know some italian as well. It's not too bad, but then again, I'm used to ordering parts via catalog.