Kinda surprised no one saw this
http://www.moddb.com/mods/swat-4-specia ... 2-released
You must have Swat4 1.1 (which you do) and the stetchkov syndicate.
To install you must first install Swat4 Remake mod v1.1 while NOT overwriting anything, the path to the Swat4X.exe (Of the Remake mod) should be : D:\SWAT 4 1.1\Swat 4 Remake Mod\System while the path to the Original Swat4 1.1 EXE should be: D:\SWAT 4 1.1\Content\System
Now after installing Remake Mod v1.1 you must install v1.2 ON 1.1
**By installing I mean extracting the RAR file**
I really recommand the mod, the game looks so amazing.
Here's one screenshot I made: