At the risk of opening a can of worms (sorry, I haven't really been paying attention to this forum and only just spotted this!), what's this chassis for? Is it a new class Paul, or does it race alongside the existing Mardaves? Is it a drop-in replacement for the alloy Mardave chassis? Is it just a wider pan or does it do something else? What's this top plate you speak of?
Point me at another thread if it's already answered elsewhere!