Re: I think it was well known....
Wasn't there a book published some time in the late 90s - early 2000s about BAE experimental aircraft and projects that hadn't got off the ground?
IIRC, there was a Harrier Next Generation design that had twin tail-booms allowing the engine to have a more realistic afterburner with similar or same thrust vectoring from the bypass fans.
Anyone remember the name of the book? I've forgotten it completely.