I see struts/shocks on ebay periodically. Haven't found any springs except for King springs in Australia (lower a little bit - maybe 1 inch). You can get shocks and struts from rockauto.com according to their catalog.
rear shocks on ebay:
http://cgi.ebay.com/ebaymotors/ws/eBa ... 7963981949&category=33590Try the datsun 210 Yahoo Group. They're more geared toward the 210/B310s than this site, though I do get lots of info here on the engines because they're all basically the same. But you may get more 210 specific help there.