I need help modifying the footstep sounds of a specific armor

[Khajitdassombras]

Forgive my English, it's not my native language.

I'm a beginner with the FO4 Edit tool, and I needed help changing the 
footstep sound of an armor mod, which is actually part of a Terminator-themed
 mod 1 (https://www.nexusmods.com/fallout4/mods/17585?tab=files 0)
 2 (https://www.nexusmods.com/fallout4/mods/63091?tab=files) ,
which includes a T-800 armor, and I wanted to replace the footstep sound with
 that of this mod (https://www.nexusmods.com/fallout4/mods/44352?tab=files&file_id=179105).
 I can't find anything very explanatory on the internet about modifying footstep sounds in armor mods.

Could someone more experienced with Fo4edit help me?

Edited 13 hours ago by Khajitdassombras

[LarannKiar]

Change the footstep sound of the Power Armor frame Armor Addon, e.g. AAPowerArmorFrameAtomCat [ARMA:001909D2] >> SNDD - Footstep Sound >> FSTArmorPowerFootstepSet [FSTS:00021ADC] to another Footstep Set record.

As far as I remember, the Power Armor frame that gets equipped on the player when they a Power Armor is hardcoded (more specifically referenced by the Default Object PowerArmorDefaultFrameArmor_DO [DFOB:0015503E]) so I'm not sure you can change the footstep sound per armor frame.