The stock AC system, as far the engine components - only weigh in around 40-60lbs, definitely not anywhere near 150lbs. The evap core is not immediately visible under the dash, pull one of the firewall plugs and see if there's a fitting in there.
Lol, replace her knuckles and then at your leisure replace those broken studs, or bring to a shop once they're off the car to have it done... then you have a nice upgrade for your NA if it does have the small rotors!