Here is a photo of what appears to be 3X-GDM. I have no idea when it was taken, but you can see it looks extremely different from 3X-GDO, the airplane that supposedly crashed on December 25, 2003.
Based on these photos, wouldn't it be easy to determine which airplane actually crashed?
http://727.assintel.com.br/acid/images/3x-gdm_01.jpg