I generally don't like the clutter of AC but have grown less fond of driving on 100 degree days without air. A setup I was looking at is electric... like the AC on electric cars. Sean Hyland had parts for that. Looks like it could be mounted in the trunk with very few parts needed up front.

But i'm not sure they are still around www.seanhylandmotorsport.com ? Someone must offer that stuff, or it could be taken from any electric or hybrid at a wrecking yard. Looks like a curling rock. about a foot diameter and around 5" high.