The Noise MOD is already out there but the RAF decided to live with the ban on VC10's landing at civil airports across EASA Land
Prey tell, what was it? a modified jetpipe?
They were looking at adding three core engines from the v2500 I think when I was in, in a triangular fit on either side. It was one mooted Idea.
I always thought 2 RB211 on the back end would have been superb, after all they tested on on them.