So for as long as I've had my '82 its had overheating issues. I've spent the last few years redoing basically everything in the cooling system and now the only time the car climbs above 180 is sitting in traffic with the A/C on. The car came into my possession with some sort of Chinese r134 conversion kit on it and wasn't exactly what one would call a quality install, though it is functional. The A/C compressor activating is noticeable enough that I can feel a power difference from the engine when it first kicks on as well. My main question here is what would be a normal amount of strain on an engine from an A/C compressor and if I do decide to replace it, is it worth going back to a stock style compressor?