You are now asking the guy who had to ask another guy to do that CAD as I am way to dumb to do that !
I just gave hime some 3 views and a cutaway drawring and this piece of art is what he came up with, I almost wish I could get a solid brass model like that!
I believe this remdering is now used to get the structure as a "cut view" can be taken from any place and those will then be the formers and ribs.
It will be built in very much the same way as your 337, but just fully sheeted with very light 2mm balsa. If a success I will make a mold to produce epoxy glass fuse and necells, way cheaper and faster.
I particularly like the simplicity of this design, no internal ducting to speak of and there is loads of room to install batt packs and retracts without compromizing airflow.
Theuns