I'm very curious how this plays out. Ever since I picked up my first pin I've been thinking about looking for a System 11 project pin in the midwest to learn on. I'm not actively searching as I was for the BK2K but more curious as to what you end up finding (like davewth said, respond to spraynard).
I did end up finding the BK2K via a Mr. Pinball wanted ad, you might want to try there as well.