Thanks -- I was hoping it was a 560 crank. Found the crank on ebay if anybody is interested here is the link
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7994316651&rd=1&sspagename=STRK%3AMEWA%3AIT
I guess I'll keep looking -- the price just seemed right.