I saw an 2009 XB12S in an ad that had the older version right hand side engine cover. The round one that says "Lightning", not the later one that says "Thunderstorm". Are there 2009's with the old cover? Does the old one fit the updated engine? Are there other ways to tell which model year the bike/engine is without the VIN number?

I'm a beginner when it comes to these bikes, but I really like them and I'm planning on buying one soon.