If you really want an accurate Vimy bomber, be prepared for some major surgery. I started one in a groupsbuild on the Dutch Modelbrouwers site. Unfortunately I never finished it. Got stuck with the nacelles and the struts...
Foremost is the rounded bump, who extends to far backwards. Because of that the aft MG-position sits also to far backwards, as are the side and bottom windows. Also the bottom MG-position is missing.
Secondly, the nose on the bomber isn't rounded, but has some flat planed glass windows. Frog (and probably Novo) uses black decal to simulate this. Interior is non existing and consist manly of some rather large ejection marks.
After several attempts to rectify these short-comings I ended up scratch-building the fuselage with thin plasticard (clear for the aft fuselage) on plastic or soldered brass frames.
And then you have off-course the hideous wings, which took hours to sand...
I posted some pics in my thread here
, Although most of it is in Dutch, I added some noter here and there in English.