Instead of an air conditioning unit, would it be possible to implement some sort of heat exchanger?
Actually, come to think about it, a regenerative type exchanger could be implemented in a water cooling resevoir, but that would only replace a radiator, not acomplish true air conditioning...
You can bandsaw them in half lengthwise and use them for decoration? Have the trails wrap around the body and they meet in the front middle maybe?
Just a thought.
Cheers