Michael Lee wrote:
  Sorry, been busy as usual.  I did pull them out and I
have most parts
 for a full unit intact.  What parts can you use?  Also, these are parts
 for a Unix PC version of the 3b1 which may have different power supplies
 and casing than an actual 3b1. 
Both models are a "Unix PC".
The original model is the 7300, and uses a half-height drive.  Standard
drives were 10MB or 20MB.
The newer model is the 3B1, and has a "hump" to accommodate a
full-height drive, and a higher-rated power supply.  Standard drives
were 40MB or 67MB.