Some images showing a conversion done by the 44th Bomb Group at RAF Shipdham in May 1944, removing the hand-cranked bomb winch on their M6 Bomb Service Trucks and replacing it with a powered one.

As standard:



Converted:





Details:





It appears they rigged up a drive from the transmission.
Was there a straight-swap PTO from a GMC or similar that could have been used?

All the best,
PB