I went to that sale also. The White 8920 combine less heads for $700.00 was a good deal for the engine or tires alone. The shocker to me  was the four Oliver 55 series suitcase weights bringing $75 a piece.That White 80 proto will take alot of work to restore.The hardest will be finding documentation of what it was equipped with and its outward appearence. The fact it had a standard mechanical 1600/2-70 brake on the left and a hydraulic lever actuated brake on the right was unique.I wish I would of had my digital camera with me to snap a few shots I did not know there would be something as unusual as that there.