Gmod trains adv dup help

I saw on youtube today this awesome train build on gmod and I can’t find any files no matter how hard I look. If anyone can find this kind of stuff please point me in the right direction please.

EDIT:

forgot the link to the vid DX http://www.youtube.com/watch?v=KO5VZ9VnV4A&feature=related

This is the MODELS AND SKINS SECTION.

You posted in the wrong place.

… F***. please forgive my misplaced post.