So, I was under the car the other day and I looked up to notice the alternator pivot bolt was changed out to something like this ; http://t3.gstatic.com/images?q=tbn:A...EVWRB36gG6jxtw and the nut on the left side wasn't all the way on. Finally after trying to torque it to spec, I realized the nut can only fit about half way on because the bolt is slightly too short. I wound up putting the nut on upsidedown to give it more threads.

Anyway, I looked online at the parts catalog, but I couldn't find where this bolt and nut are called out.

I don't remember putting the bolt on there, but anyway.... Maybe it is fine, but it seems hard to find a similar bolt that is that much longer locally...