I added an Arizona A/C kit to my 95 Wrangler a few months ago, and have been happy ever since.  They put together a good kit, though the instructions are a little weak.  I managed to muddle my way through the install in about a day.
It was a lot of money for an 11 year old jeep, and my millage dropped from about 20 to 18 mpg.  For the first few days it felt like I was driving with the e-brake on.
However, it's days like today when it's all worth wile.  We hit 111 here in the south west desert of Utah.