your best bet is a parts store unless you have a salvage yard around that stays open on sundays,some of the pick and pull places sell those for around 45 bucks ,but if you buy one from them make sure you get some kind of a warranty on it at least ten days or more,other wise your better off buying a new rebuild,they come with a good warranty on them and they aren't easy to swap out,so the better the warranty is the less chance you,ll have of getting a bad one,i own two of those cars and neither one is easy to change an alternator on,good luck.