This is the setup that Ted Brown wanted to do to make a Bucket road worthy for long highway trips. He wanted the front spring to go from kingpin to kingpin and long leaves in the rear parallel with frame and the frame under slung the front and rear axles. Age and medical problems prevented him from his objective before he died. RIP
I feel very lucky to have bandied back and forth suspension ideas with Ted for close to a year. We frequently agreed to disagree, but the exchange was still intriguing. Unfortunately the whole thing was abandoned when he decided it was way beyond my fabrication abilities...and I had to reluctantly agree. Now I wish I had kept the emails so I could at least assemble the results on paper.