Would anybody know if there is any difference between a 70A or a 80A alternator, besides the difference in power? Would it be a problem if i got the 80A even if i needed the 70, or vice versa. Any difference in the connectors or anything like that. From what i know, i need the 80, cuz i ahve power windows and sun-roof. Atleast, thats wat some people have told me. One more question, any idea how much a used one should cost?