Well yes its possible, funny but true and I have seen a Mutt in Brazil with an AC in it, there are some in the US who have done it too.
Mostly on with a hardtop, but theres an airconditioned one with a softtop too.
A hardtop looks like this, it was standard in the Arctic Kit supplied for the Mutts, none came here though.
This particular one is in Indonesia

The best I guess would be a hanging type AC unit, in place of the heater. or if one wishes to play around with the whole dash panel.
