My guess, would be that it is Randy Berry of Marauder. He is out of Potomac, Illinois, and has a partener ( Eldon Rassmusen if memory serves me correctly) in Indianapolis, Indiana. I was there last summer, and he had either 10 or 12 of them, new in boxes then. I was there, in 1980 also, and he had about the same amount then also. I have been told, by various sources, that if these "new" gearboxes are not properly stored, the portion of the gears that are out of the oil frequently rust. Just something to think about when considering buying a new, 30 year old gearbox.
Regards Brian