The ef2_models_expansion.zip file you have requested: Skins / Skin Packs / EF2 Models Expansion - 8.41mb is not available. Perhaps try browsing all files for the game Star Trek: Elite Force II and upload any files you want to share or are missing. This is the only information we could locate:
We've seen quite a few single player to multi player conversions, but I don't recall seeing one with every single skin. Of course, it's been a while so perhaps my memory is failing me again.