This is posted as for a merc 312, but clearly is the lincoln style ports, maybe not even a ford. I'm not sure. But for you lincoln guys this could be useful.http://cgi.ebay.com/ebaymotors/Ford-Y-Block-312-Offenhauser-3-Duce-Rat-Rod-Hot-Rod_W0QQitemZ220186149404QQihZ012QQcategoryZ36474QQssPageNameZWDVWQQrdZ1QQcmdZViewItem