AW, if you come across the perfect system, I'd like to hear it. I was going to do AC in February or so. I was thinking of getting a custom headliner with nozzles like in the new Suburbans to help spread the air out a bit. As for power, us Texans need something seriously cold and strong. You might want to review the great explanations over at
http://www.griffiths.com/. I'm gonna get a system from them for my Porsche, and they might be able to help with my Burb. Certainly the reading material the have will help you with a plan.