The Boardwalk is a good match with my 1991 literature but the Volpe isn't. It wasn't available in red (in America) and is listed as being equipped with SunTour X-1. Regardless, we should be able to tell from the serial numbers. Based on samples in my database, Bianchi was sourcing their "cross-terrain" bicycles from Hodaka in Taiwan around this period and it's a known serial number format.