Bruce --I have had an AlfaBill AC Conpressor in my 164S for almost 2 years. No problem either with the the compressor or belt. Point of fact the only belt issue has been the poor design of the idler bearing of the 164. I've had to replace 5 over the last 5 years! I've owned my 83 GTV6 since new and never had a problem with the idler bearing! Terry Johnston