I was at the "local" Truck yard looking for spicer boxes, when I came upon a cab on chassis with this strange gearbox on it. The brake drum was aft on the truck, with a speedo cable and an eaton electric motor. One drive shaft in and one shaft back out. Is this some in-line pto assembly I never heard of? I couldn't see any tags or casting marks.

https://drive.google.com/drive/folders/1JacWNIsx23C2fDgkOUWayt2Po80_2bNO?usp=share_link