Hi Bill, welcome to the forum.
At 1971 I'd guess it's an S2 and therefore one of the Renault engines. Sadly I don't know anything about these but several here do so I'd suggest posting a picture of the engine bay and no doubt you'll get some answers. The thing about Europas is that you get all sorts of engines being used, that's the trouble with a big engine bay !
On reflection I suppose it could be an early TC with the comment about Lotus finned valve cover & twin webers (dellortos ?) , didn't they come out in late '71 ?
Brian