David, well done on the book. Lots of pictures and not too much jibber-jabber as Mr. T would say.
I see a set of CV's in my future, glad to see you adopted this into the cars.
I'm curious what your thoughts are about a modified tunnel design for the existing frame that would help stiffen the chassis? (for the production cars) I'm sure there are other weak spots (like the frame rails being so far inboard), but it seems like the tunnel could provide a large improvement to chassis stiffness without impacting the originality too badly. (especially since it's covered in carpet anyway)