OK, a little more research yielded an eBay link that gave me what I want. I'll need to buy an additional coupler, but they're dirt cheap...so no problem.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=271166326799
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=271166326799