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

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

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

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

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

Then just launch OFP with the mod ECP and play.

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

NOTE : 
1  -  YOU must have already installed the latest version of the ECP mod correctly before, it will NOT work with older ECP versions
2  -  This config only feature few of the numerous GRAA options to be enabled/disabled in the Config.cpp , as i think more of them could conflict with ECP 
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 ECP config, in the case you lose your backup and want to go back to the old models, weapons and features