<VV> vaccuum advance...

[Secular]

  Hi:

  Recently I had to replace the vacuum advance unit in my 1966 Corsa 
  (the engine has been replaced with a rebuilt 110). 

  I found a unit locally which belonged to a 1962 102 HP engine. 

  Now, the car runs better than it ever has. Is there a book and/or article 
  so I could find out the  difference between the various vacuum advance 
  units used on Corvairs?

  Regards,


  Tony I. 
  Charlotte, NC