Re. aft nozzles was that the overall design or the vanes inside the thing ?
In my days ( GR5-7 & FRS 1 & 2, T-bird exports etc) the cold nozzles were played about with on the GR5 including the zero-scarf items they inherited from the AV-8B - when I asked the reasoning behind this I was given a typically political reply from the then head of Flight Test, " To get away from the supplier company " - nothing to do with performance !