I installed Vintage Air in my bird last summer and it’s “ok”. I’d like to see and test the classic air set up for comparison. The thing about Vintage is they set their thermostat to shut off the compressor fairly conservatively. I place a digital thermometer in the center vent and I can easily tell when the compressor cycles on and then off. You don’t want the evaporator to freeze up but they turn the compressor off when the vent temp get to 45 or 44 degrees. I know from experience that here, where I live anyway, vent temps can get 4 or 5 degrees colder and not freeze up, or at least very rarely. My black on black car needs to be as cold as possible in this Texas heat! Otherwise it’s a good system.