<VV> '65 Corsa turbo distributor question

[Bruce Bacher]

Time for a newbie question....
 
I've heard and read of the importance of making sure I have the right
distributor (and dist. parts) for my '65 180 turbo Corsa.  OK, I understand
that.  My question is:  how can I tell that I have the right parts in hand?
Do they look different than the wrong parts?  If you can just tell me where
to read that info, I'll be happy.  I just can't find it in the books I have.