A/c Compressor Bypass Pulley?

What is your question?

My car is 2000 V40 with 163000 miles and is suffering the bad a/c compressor clutch/pulley issue. Because the pulley of compressor won't spin any more, I got rubber-like smoke from it and actually the drive belt fell out from the whole belt/pulley system. I have several questions: 1) is it possible that I just change the pulley and/or clutch without removing/replacing the whole a/c compressor? 2) If I cannot just replace the pulley, can I use a bypass pulley to replace the a/c compressor? (sure, I won't have any cold air) I looked for some time online but haven't found the right part for volvo yet... 3) If there is no such bypass pulley, can I use a shorter drive belt to bypass the a/c compressor? Any ideals? Thanks! Han