PAM005? If so, yes, find a PAM111 sapphire caseback and it will fit. I have a 111 H Factory caseback on my 005 Noob Factory, and it fits perfectly. However, the movement, while it looks identical to the 111 movement, is not as well finished on mine, the plating is a little bit hazy on one section. I guess if they get one which wasn't finished properly but is 90% correct they put it in a closed caseback watch. You probably won't have that problem though.
It basically looks like this though, the issue wouldn't show up in a photo.