Keep the idea's rolling guys, this could turn into some intuitive innovation for us all.
I don't have a full understanding on what kind of forces we are looking at trying to control here. But wouldn't the brace Badart showed in the first post work if he also came off the top of it with another bar and run that back to the firewall as high and close to the outer fender as possible? Wouldn't that help with the twisting combined with using his tubular radiator support to tie the front frame rails together?