Try this,
http://fesarius.hp.infoseek.co.jp/1701refit.shtml
Scroll down, there is a wireframe where you can see how engineering fits.
Also for references try this link:
http://www.foundation3d.com/forums/showthread.php?t=198
Oh, I agree that I can make it fit. Just the current state of my model, I have to lower it a meter or so and it will fit fine - and probably line up sufficiently with the nacelle pylons. Of course, the corridor leading forward cannot fit under virtually any circumstances; I made the choice to disregard it, and move on.