The first 3 flight test aircraft were donated: ZA001 Went to Nagoya, Japan. ZA002 Went to Pima Air and Space Museum (as you noted). ZA003 Went to the Museum

The first 3 flight test aircraft were donated: ZA001 Went to Nagoya, Japan. ZA002 Went to Pima Air and Space Museum (as you noted). ZA003 Went to the Museum of Flight in Seattle. As for the other three: ZA004 may still be with Boeing. ZA005 was scrapped. ZA006 appears to have been sold to Mexico for a VIP transport.