To use this GRAA mod with the SLX mod, you need to do the following  EXACTLY

Take the Config.cpp that is in this folderr "SLX config" of the file you are currently reading

Put this Config.cpp in ...\your OFP install folder\@SLX\Bin\

basically replace the Config.cpp found in the bin folder of the SLX mod by this new one.
But i moe than STRONGLY recommend to back up the original SLX config first.

Once done, take ALL the pbo from the Addons folder of the GRAA mod
Then put them in the Addons folder of the SLX mod, don't worry they replace nothing so nothing to back up first.

Then just launch OFP with the mod SLX and play.

(i strongly suggest you DO NOT use another mod while playing with this config in SLX) 

NOTE : 
0 - You need JAM3 addons to avoid some error messages, it was the same with default SLX anyways.
1  -  YOU must have already installed the version 1.09 of the SLX mod, correctly if you want to play
2  -  This config only feature 3 of the numerous GRAA options to be enabled/disabled in the Config.cpp , as i think more of them could conflict with SLX .
3 -  You can use any replacement animation , the GRAA anim pack Anim.pbo located in the DTA folder  is not needed
4 - Is provided the original SLX config, in the case you lose your backup and want to go back to the old models, weapons and features