Here' s a set of new straight eight pistons on ebay...
Click Here (http://rover.ebay.com/rover/1/711-1751-2978-71/1?AID=5463217&PID=499229&mpre=http%3A//cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll%3FViewItem%26ih%3D002%26sspagename%3 DSTRK%253AMEWA%253AIT%26viewitem%3D%26item%3D12006 6885410%26rd%3D1%2C1)
They are almost certainly for a 248 inch engine. Not much time left!!!