I have had good luck with a site called www.Car-part.com. I have gotten a used compressor from one of the places on that site. Have had no problems with it all. They all guarantee them for a period of time. Usually 90 days. If you don't have any problems within 90 days you generally won't have any problems. I was troubleshooting my 91 prelude and eventually found that the controll box had gone bad. Control box was disconnecting my compressor as if the controll box was sensing that the compressor was seizing but it was not. Good Luck :driving: