Will this work???
As per section 4.1 in the rulebook (check the rulebook first as most questions can be answered from there) ECE 22-04 and 22-05 will be accepted for the 2011 year, as well as Snell 2005 and 2010. For the 2012 season Snell 2010 will be the minimum, I'm not sure about the ECE standard for 2012, but that will not effect this season.