Just had a an engine rebuild (ouch!) and the garage said that they have (for now) bypassed the air con compressor unit because it was making a rattly shrieking noise! They've bypassed the pulley and said I'll need a new compressor, after which they'll refit the correct belt...

My car's a JDM 97 MY WRX, code GC8D4FD, although I could check the specific part number if required of course. Where do folk recommend getting a replacement - happy to go recon - so any suggestions welcome?

David