There was some passing mention of these in the past. If you look at:

http://www.anime-world.com/images/gxbg0006.jpg

you can see a fairly large JPEG (430k) of the kit for Belldandy in
Goddess costume similar to the anime.

http://www.anime-world.com/images/gk15.jpg (127k)

contains a quarter-frame of the Belldandy angle wing pose kit.

(This is a relatively new web site for a company that says 
they sell garage kits and will have other anime stuff. I haven't
ordered from them.  You may want to turn auto-image loading off 
to view their pages, though, because they don't do thumbnails, 
they just rescale big images to thumbnail size.)
-- 
    Albert Lunde                      Albert-Lunde@nwu.edu