Diff special tools

[steve_sides@gilbarco.com (Steve Sides)]

     Greetings,
        I'm considering an overhaul of a Spit diff and am looking for the 
     special tools.  Specifically, the case spreader and the guage to 
     measure the pinion height.  Anyone know where these might be 
     available?  Also, any comments and suggestions from those who have 
     attempted and succeeded (or failed) at a rebuild would be appreciated. 
      Thanks in advance for your help.
     
     Steve