1/144 Scale Grumman X-29

I like unusual looking airplanes and Grumman sure made one with this X-29.

I wonder where is X-1 to X-28 ?

This model was a charm to build, but I do not recall if I did much research. The photo's do not show hardly any flashing on this Dragon kit. My data block say's that I built this model in late 2015. I painted the model with Tamiya paint's as it is the only model paints that I have used for over ten years.