A modification of my Windvane/Spoiler upgrade kit I made (that utilizes the target master wings).
This particular one is designed to be a single one piece assembly, perfect for your carry or terror where you don't want more than one visible color on the toy!
This piece attaches without the use of glue and doesn't hinder the transformation.
Please note, The ends are squared to conform with the minimum sizes that shapeways requires to print, but it'd be easy enough to sand (though I think it reveals white plastic underneath)