I think I wasn't all too clear in my questioning.
I've build the 3Pi about 6 months ago and I'm still very happy with them. Boy, they go loud with my 300B's.
I thought about building another speaker in which I could use the Alpha12 and the PSD2002 combined with a midhorn with an Alpha6 for example.
Maybe Adrian can offer me some information or tips.

Are the plans for the 8Pi allready available ?

Thanks,
Jim