Lancia Engine, But which one ?

Hi All. Im a newbie, here and I dont own a Lancia, only a Lada. Anyways, the point of me turning up here is to try to help me ID an engine. I know the engine says Lancia on the top cover, but which one?
Ii thought some people may know.?
Heres the only pic i have of it.http://images.forum-auto.com/mesimages/86527/e3a9_12.JPG

Thanks.
John - UK