cptjim,
Yes, G-SURY and G-SPHU are both T2's
To have the "mission pod" you have to have high skids. It could have been that the customer specified Floatation Gear, and the Pod is not approved with float gear fitted also. (You can have high skid gear with floats, because there are some Private machines in that configuration.)
I do believe that the pod is a McAlpines Modification, and all the role equipment is all fitted at McAlpines, so if the pod is not required, all the gadgets have to live elsewhere!
I do believe that the new South Wales machine will be the same.