I went with Old Aire in my 54 truck because all the major line hookups are on the engine side of the firewall. Have used the V. Aire and discovered working up under the dash is for younger more flexible guys. Olde Aire's underdash distribution system is great and their 3 speed fan will flip your skirt on HIGH and will be a whisper on the LOW setting. Didn't need their tech support as everything went in according to the instructions. I'd rate it 4 out of 5 stars.
Dave
