Just a quick follow up to let you know that the Halifax porsche dealer suggested me to go to the BMW of Moncton in NB that was really closer to me. I found an alternator at CarQuest (with overnight shipping), even the dealer could have it until next week. So It ended up perfect and I had a really really nice service at BMW Moncton, the guy at Porsche of Halifax was really nice too.. I recommand them both to anyone who got some problem in Atlantic Canada