This yard is mentioned in a current BAT listing for a '71 Z -- might be someone to get acquainted with if they aren't already part of the group.

http://bringatrailer.com/listing/1971-datsun-240z-28/

Google street view shows even more cars at a shop across the street  

Not too far from me is E. Radatz Motorsports. There are many more inside the building, too.

Wow, this is great.  I've only ever found 1 z (a 240z) at our local junkyard.  I pulled everything I could afford off of it.  I could spend days in yards like this.  Some call it being a scavenger, some call it being "thrifty", some realize it's what you do if you own old cars.