This hkx will replace to below motions.
them motion are very little the rumble, so I chose.
PairedKillH2HSuperMan_Lead
PairedKillH2HSuperMan_Victim
PairedKillH2HUpperCut_Lead
PairedKillH2HUpperCut_Victim
PairedKillH2HFrontChoke_AttackerLead
PairedKillH2HFrontChoke_Victim
PairedKillTacklePunchToDeath_AttackerLead
PairedKillTacklePunchToDeath_Victim

For run this motion, the trigger are unarmed weapon.
it's possible to replace other paired finish move motion file as long as match Lead and Victim.
but character location might be rumble because fo4 behavior are control this.
especially, PairedKillH2HFrontChoke and PairedKillTacklePunchToDeath are slide rate are high, if use other motion, victim side need the adjust by hkx tool.
also unfortunately, those motions will slide a bit.

///Install
put them file to below path, if nothing directory, create path.
Data\Meshes\Actors\character\Animations\Paired

///Uninstall
remove this files.