Nice find GTX!
I'm liking the sound of the idea of 'interim Canberra tanker', especially with the Canberra's being replaced with F-111 (alas ten years later than originally planned), as the Canberra's, going by other same era Canberra's, had plenty of flight time left in them.
Fuel, hose and pump arrangement in the bomb bay, transferable fuel in drop tanks under the wings....
M.A.D