FMAS: Hit locations

Just wondering if anyone has messed around with hit locations in FMAS? 
I'm
thinking along the lines of a small table where the majority of hits
would
be to center mass with appendages such as the legs, arms, and the head
having a small chance of being hit.

Kill results to the head and torso are just that...kills.

Wound results to arms and legs would reduce firepower die rolls and
movement
speeds respectivly.

Kill results to arms and legs would disable the arm completely or reduce
mobility class to d4.

Damo