Help figuring out what to buy for Air Conditioning

I went with the Vintage air setup in my 68 Barracuda Notch. They don't make one specific for my application so I went for the Gen IV Magnum...well, I'm disappointed at best. It blows cold air for sure, just not much of it and is very loud. The vent louvers don't stay where you adjust them...they will eventually move to their lowest position and will move to the extreme left or right position. The heater control valve eventually melted its self at the wire terminal connections because of the extreme heat from the solenoid valve...a known problem fixed by an upgrade to their newer motor controlled valve. Seal your car up to stop outside leaks and tint your windows or it will be useless. The kit was incomplete lacking some brackets and cold outside air vent plugs...they forgot to include the binary switch and the stepper motor for blend was bad as well. I was ready to rip the whole thing out and throw it in the dumpster to try instead a system from classic auto air...havent yet....still might...unhappy!!!