I installed one of these years back in my 72 Super and it works amazingly well. Really keeps me cool, even in the dead of summer here in Georgia where temps are easily 95 degrees plus. Peripherally-- when it's raining or is really humid it keeps the windows clearer as well by taking all of the moisture out of the air. Took me a day to install and it wasn't so bad an install job. Then just took it to the shop to have it charged. Very pleased, and it's been 4 or 5 years since I installed it! John