Hello, My name is Jack and my brother who I think was a member of this forum (Buster) past away last week and was waiting on an new alternator to install. I have never worked on a Porsche before but am very mechanically inclined. There is a large circular strap that looks like it actualy holds the alternator in place with an impeller attached with some shims. The coil also looks like it needs to reattached after the alternator and impeler is straped back in place. I have some wiring diagrams and photos of what I'm working with.
http://s5.photobucket.com/albums/y159/ChoDan/911SC/
Tomorrow I will post actual photos of the WIP.
I know you can't help me at all right now without all the WIP photos and tech info, but I'll do my best.