What you want are exploded views of various parts of the model to show fitment. It's a piece of cake if you know how to do it correctly and you have the model as an assembly and not as a single solid 3D body. FFG needs a really good drafter to do this other wise the artist will have to draw everything and they don't think the same as a drafter when it comes to the views. You might get enough detail with the views and then again you might not.