Originally Posted by crankshaft
2007-2011 are 654cc, while the 2012 and 2013 are 690cc. If you're reading the rules, it appears that only the 2012 and 2013 qualify for the big bike class. I mentioned this last week actually.
I wouldn't expect the NORRA Tech inspectors to know this, you would be at the mercy of someone in your class protesting you, if you tried to slide by.