This mod able to change the HCAA with 6AAM for the Su-34 Fullback. 

As for the installation for this mod, floow on these steps :
1. find the game path inside Steam folder
(Game Directory ---> Steam\steamapps\common\ACE COMBAT 7\Game\Content\Paks\~mods)
2. If you didn't have the '~mods' folder, then you have to create one.


Credit to Blaze's guide for making this mod works.