Well, this took a while to figure out, it actually turned out to be really simple.
Alright, the first noticeable difference is that the swat no longer are wearing balaclavas, this is because they are now a retextured version of the Merryweather operatives. They respond at 4 stars just like NOOSE (Swat) but now have two different models, short sleeved and long sleeved. There's a lot of variety that I can implement but I thought that the standard black jumpsuits would suffice for now.

Please Note:
The NOOSE at 4 stars will not spawn with helmets, if anyone has any clue as to how I could go about fixing this or if you know of better headgear for the swat, then please leave a comment.

Installing:

Forewarning: As always I'm not responsible for any problems you may have with this mod, Accidentally deleting the wrong files, computer exploding.etc
Always backup your files so you don't have to do the whole "Verify your game cache" jazz for 8 years.

Open up Open IV and navigate down to:

x64e.rpf/models/cdimages/componentpeds_s_m_y.rpf.
Once you are here move the files from the WinRAR.etc to the folder you are in, It should do it automatically.

Then Bam, enjoy! remember to leave a comment and a like if you feel the mod was good.

Changelog:

V1: Basic model retexture.