Qeustion about the Polaris Hawkeye CDI

[kees]

hi everyone,

I have a Polaris Hawkeye of 2006
After doing some research I found that all the Hawkeye Quads built from 2006 till 2011 have the same engine an carburetor.
Only there are three different CDI boxes (ignition).
2006- Nr. 3089862
2007 and 2009 Nr.3089238
2008 – 2010 and 2011 Nr. 3089978
Can someone tell me what differs between these three CDI units and are they interchangeable

sorry for the bad english and thanks in advance,
Kees