Would someone confirm that the implementation of a buddy-buddy AAR capability (supply and receive) involves somewhat more than just bolting on a piece of legacy equipment? In my experience, a re-fuelling pod does not contain any fuel and would need a 'wet pylon' plus the associated control systems and safety features to work.
The refuelling pod fits on an ordinary fuel tank pylon, it is full of fuel on take off and can be used as an ordinary fuel tank. When airborne you select to or from to either put fuel into the tank (while refuelling) or from to use the fuel in it. It is just a piece of legacy equipment which takes some extra checks from maintenance once put on.