I've been trying to find a good illustration of the bellhousing side of that setup, and I'm wondering if you have any pictures. I get conflicting reports about how it's configured and I've been unsuccessful finding any photos of it online.
Its all apart and in a box somewhere now as the car is stripped for restoration. The linkage bolts to the frame rail. I'll probably not reinstall it but keep it in case the next owner has to have it.