This page has a few shots of how the fuselage is put together.  The fuse is a straight-forward build, starting with one side, adding the bulkheads, and gluing the two sides together.  Once the sides are together and it looks like a fuselage, the rest of the piece, nose, cockpit and tail sections are completed.
The above photos show the two sides connected by the bulkheads.  In this photo, the tail section also has the balsa blocks installed.  The next steps are for the vertical stabilizer to be installed and then balsa blocks to be added to the sides.  The side blocks are then sanded to shape. 
This is looking from the LE of where the wing fits to the fuselage.  The brushless motor can be seen installed.
These three photos show how the front blocks look after being sanded.  The rubber band is (at this point in time) keeping the bottom hatch held on.  A single nylon screw at the aft end holds it to the fuse.  A simple dowel keeps the front to the fuse.
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The image on the right is a little out of sequence, but it fits with the fuselage.  The exhaust was made from a 1/16" piece of balsa with dowels sanded flat at the angle to be glued to the base. 
The side scoop is functional.  The front is open and the fuse has an opening to allow air to pass through for battery/gear cooling.
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