A/C Options

[zac]

I had the whole family in my '70 going through brutal Cincinnati rush hour traffic on I-75 yesterday. We were headed towards Dayton on a parts run for my K20 pickup, and the thought occurred to all of us that it would be really nice to have the windows rolled up and air conditioning.

What are the various options here? Retrofitting to an original style system seems like a ton of work and would be expensive, plus I have my doubts about 40-year-old parts and r134. I converted several mid-70's Caddy coupes with iffy results. I have an 80's burb rear unit that could probably be adapted. Would just a rear-unit be enough to really take the edge off the heat? How about an underdash or brand new conversion/retrofit kit? What have you guys come up with? I don't mind spending some money as long as it works. My only conditions are that it can't be monstrously ugly and I want to keep cutting/drilling to a bare minimum. Thanks.