whats the difference between the 2008 and 09 and 10, besides color?
Not sure about the '10 but from 08 - 09 it’s just the different color scheme.
2008->2009 : there was a change of fork from Wolf CL to Funda Pro
2008 model : http://www.bikesportmichigan.com/bikes/store08bikes/08-cervelo-p3c.shtml
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I think that change was made mid-year. My 2008 P3 came with the Funda front fork.