API for hit location and dmg

I have been trying to see if there already is such an API for Dark Heresy, or other that can be re-purposed. I am looking for something that based on "hit", and subsequently "damage" will first show where the hit is located (head, body, arms or legs) and then how much dmg it does based on soak. For instance Captain Sturdy does a headshot (4) [4 is the roll / hit location]. And then you click for damage and it should show something like "Captain Sturdy did 5 rending/energy/impact/etc damage" - which is based on the soak on the character sheet. Does such a thing exist?

I don't know anything about the Dark Heresy system, but it seems like the powercards api could take the location roll and conditionally return damage based on that roll. See simple crit macro example here .