Any Mac with a SCSI port can use a EN/SC adapter to connect with a server via Ethernet much faster than via a LocalTalk bridge. Asante made several, likt this one: http://cgi.ebay.com/Asante-SCSI-to-Ethernet-Adapter-EN-SC_W0QQitemZ330174910530QQcmdZViewItem

There are others, that don't require external power and in different sizes and configurations, so just set up a search on eBay until you see one you like.