Peters Brothers/G-Well crane on Chev chassis:
https://www.ebay.com.au/itm/Vintage-...MAAOSw0o5ao8Ys
We have looked at these conversions before, where we discussed they were built during the war years using both unused CGT chassis that were not required for "Aust No9" Gun tractors as ordered, or Armoured Car chassis that were not required for the "Rhino Heavy Armoured Car". Looking at the front bumper,this looks like a CGT version.
Mike Cecil's book on "Australian Scout and Armoured cars" mentions Peters Brothers:
"By mid 1943, all the Model 8446 4x4 chassis ordered from Canada had arrived, and apart from those in use, were in storage at the Fisherman's Bend plant of GMH. They remained there until mid-1944 when at least 75 were assigned to the company of Peters Brothers, located in the Sydney suburb of Redfern. Peters Brothers had been undertaking the construction of general purpose cranes for the Services based on various makes of wheeled tractors, such as the International W-9. Peters Brothers built at least 75 cranes based on this chassis, these being assigned Commonwealth registration numbers 144311 to 144322, 144373 to 144421 and 144722 to 144735."