Import all the models in gta3.img and all the textures in txd.txd without alpha.
You can find the base models that i have used here (by Th30b3j4):
https://www.gtainside.com/en/sanandreas/skins/67172-five-nights-at-freddy-s-skin-pack/
Update 1:
-The skin of the animatronics is more brighter
-Added phantom eyes