Seller was hoping that the 200 HP Io-360 will spin it, but it is too much for it. He had a conversation with Craig Catto and Craig told him that this is a prop for 250-300 hp engine. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=4564632860&sspagename=ADME%3AL%3ADS%3AMT%3A8