Adding Air Conditioning

Hey guys and gals, has anyone ever added some sort of aftermarket air conditioning to their hoe? I have a 95 case 580 sk, and ive been bouncing the idea around of upgrading to a newer 590, but the damn thing works so well, its hard to get rid of it. Besides a few pins and bushings, and a couple of seals needing to be replaced, the only thing im really lacking is air conditioning.

So, anyone ever add anything? Im hoping to stay away from looking for a complete wrecked machine, cause they are pretty sparse around here.

Thanks!

Adding Air Conditioning