Help making NPC use standalone texture

[NobodyNoseFernando]

I have googled all over but I can't find the best way to do this...apology if this is asked a lot.

 

I have downloaded a follower replacement (http://www.nexusmods.com/skyrim/mods/40725/?) that has his own head but uses my default body replacement for his texture. I like Drachis but his custom head does not look good with it, and I'd prefer to use the textures on him that are in his screenshots (JazzJrs) while keeping Drachis for all my other argonians. However I can't figure out how to get those textures to be used just by him even though I have looked through my standalone followers and follower tutorials. Most tutorials are assuming I will start from scratch and be importing from racemenu and I can't narrow it down to just the step I need, to take an existing mod like this, but tell it to use its own body texture instead of the replacer I use for everyone else.

 

I have poked around in the ESP with TES5Edit and the CK to find the place to point him at the textures I want but I can't figure it out and I'm terrible at using the CK (especially with followers, they always get messed up if I try to touch them). I just want to tell this mod 'use these textures' but not have it overwrite those textures to be used by ALL argonians in my game. How can I make him 'standalone'? I am sure it is obvious but I've been trying to figure it out for hours and it's getting frustrating, so if someone could hold my hand through the process I would appreciate :)