RE: Vintage hull and engine
here are the links:
[link]http://books.google.com/books?id=rikDAAAAMBAJ&pg=PA142&dq=eljo+mark+II+engine&cd=1[/link]
[link]http://cgi.ebay.com/Vintage-ELJO-4-Stroke-Gas-Ignition-Engine-Project_W0QQitemZ270512986680QQcmdZViewItemQQptZRa dio_Control_Parts_Accessories?hash=item3efbd49a38[/link]