Unless you are a glutton for punishment or have a straight line race car-the PS is useful and not as easy as it appears to remove. There are write-ups to do the hoses and whatnot. As to the AC-have a professional shop evacuate the system first. OR you can simply take the belt off and leave it in the car. If you must remove it-take you time and get the 2 rubber plugs for the firewall to replace the one for the lines and the other for the drain. Everything is pretty obvious as to removal. You WILL need the transition duct that goes between the blower and heater/AC box-dealer.