I saw you posted on another thread but it seemed inappropriate to welcome you there because you were asking a question so...
1970S2!!!
Before I get to your question, I thought I'd just mention that WE LOVE PICTURES!!!
Ok. This page of the S2 workshop manual should give you some idea what they look like (
http://lotus-europa.com/manuals/s2work/diagrams/index.htm). This page of the S1/S2 parts manual may help also (
http://lotus-europa.com/manuals/s2parts/c/s2ca.pdf). Basically the leading arms are alike and mirror images of each other and likewise with the trailing arms. The first link should help you decide if yours are still in spec. These pieces are pretty rare but you may be able to find replacements because those who want to get some adjustability in their front suspension will replace their stock arms with adjustable ones. On the other hand, you might want adjustable pieces anyway.
The workshop, parts, and user manuals are found here (
http://lotus-europa.com/manuals/) but there is A LOT more information on that page. It doesn't have everything about a Europa but there is probably more about a Europa on that page than any other single page anywhere. The workshop and parts manuals are searchable which is nice!