Whoa now that's abit different!! Dont think that's going to appeal to the purist amongst us (I am an ex RAF Harrier engineer).... just my humble opinion..... I know you loose some thrust with a bifurcated exhaust and I'm sure Lukai or Anton have done some tests so would be interesting to see some figures (for loss of thrust) but I would have thought that a single larger engine with the exhaust split out of the rear nozzles would have been better....... this is certainly the way I am inclining as my Harrier project progresses. As I said before, just my humble opinion.