Pectorals

[gilbertocarlos]

Couldn't simply be made an excuse that because of the Ribcage, to hit vitals in area 10 will be more difficult, let's say -6, and because you couldn't see, go down to -8.

Or you could make a new area:
Lungs -5 to hit
Treat as vitals for all purpose, but have DR 2 of the ribcage, useful when you opponent have the upper torso protected.