heat

anyone tried one of these units? saw on 2002faq site seems interesting I think wheeler/dealer used one on a 60's Volvo http://www.dtechparts.com/ac-kit-for-bmw-2002-and-most-classic-cars-mustang-camaro-bmw-cs-coupe-3-0-fj40-toyota-landcruiser-bronco-blazer-etc/