Thanks a million Andy and Terry!
In the pictures Paul posted, if looks like T9+HK has a fuel filler point just above the left arm of the port Balkenkreuz - is that right Terry? If so, the kit parts are correct
Btw, scratchbuilding a new flare chute for the cockpit at moment. Very small and tedious work.
The parts manual for the P-51 B and C shows the following sketch of items that would be visible through the rear quarter glazing but it's not clear if this detail is the same on C's and retrofitted B's: