only the uppers are in that configuration on all the triangulated set ups I have seen.
From what I have read, a triangulated 4 link, or tri-link, should negate the need for a watts link or panhard rod. Not sure on how correct that is, but I need look into it further. As I said my real concern about such a set up is whther it could handle the forces that the diff will cop. That said, I have not seen many of these set ups on circuit cars, so there must be a reason for it, but I need to fabricate diff mounts anyway, so if this a sound idea, and if it means no watts link or panhard, that means, less fabrication, less metal, less weight, and more room for my fuel and cooling system.