Okay, just trying to help. Many of these places are old school shops and respond better to phone calls, however, and can discuss specific parts with you that way. NAPA can also supply most filters, bulbs, etc.
And again, MG Cycle has everything: the concept of "local shops" for most Guzzi riders doesn't really exist, you order the parts then either do it yourself or find a local mechanic who will. They're as simple as the BMW airheads to work on, if not more so.