nude Help with Bayonetta nude mod

[PhantomPhucker]

Heyo all, first post here so sorry if I don't have the tags figured out yet. Essentially I found a nude mod for Bayonetta on nexus 

https://www.nexusmods.com/bayonetta/mods/33?tab=images

But the actual naked model is only for a costume you get after you finish the game. And while I could download a save file I just want to see if I could instead replace the default costume with the nude model in any way. If need be I can provide screenshots of the game files and such as they are and will try to follow any instructions to the letter. I know absolutely nothing about modding.