I did a little searching on this topic, but want to double check before I start looking on ebay. If I'm looking for more low end power can I swap CDI from 2003-2006 models into my 2008? I found this comment from Gray, but want to be sure it applies to my 2008. "Usually, yes. An '06 is 2S2-85540-00-00, an '03, 5TA-85540-00-00, '04 is 5XD-85540-00-00, so on. Since all 85540's are CDI boxes, the part itself will usually only be stamped as 2S2-00, or 5TA-00. The two sets of zeros after the basic part number (85540) indicate significant revisions, alternate sizes and the like, and the second pair for less significant changes. The '07 part number is 2S2-85540-70-00, so that CDI is stamped 2S2-70."