Do you know what Alpina did to the car/engine, and what equipment they installed? Or is this the type of information you're looking for?
Alpina custom built/modified cars to order at that point, so they would install any of their gear that the buyer wanted-- in addition to factory BMW parts and aftermarket equipment from other manufacturers.
Other people know much more than I do, but I have build sheets/price lists from that period as well as period photos/ads. Let me know if that would be helpful.