Here's the pics I promised.
The obligatory sprue shot.
Basic assembly.
Basic assembly of the X-29.
I dropped the flaps at the rear of the strakes.
Nose to nose. I have since removed the fins on the nose of the X-29.
Comparison of the undersides.
I've since added weapons pylons to each. The F-20 will be loaded for bear with Mavericks and mk 82s while the X/F-29 will have a Sidewinder, ACMI pod and gas bags. I'm going with an aggressor paint scheme on the X/F-29.