Wanted to tell you of the horrors of replacing the alternator on the 90 q45 after 20 years and 168,000 miles. I believe the alternator is the original, and nothing in the service manual anywhere mentions brackets holding the alternator in place from the rear of the alternator. Had to rip the thing off, to gain access. A 2 hour job quickly turned into a 6 hour nightmare. Plus it does not mention how to somehow hold onto a nut for the mounting bolt when there is no way to get your hand behind the alternator. Super glue to the rescue!
Here are some pics of the original (?) alternator:


