GRAND-AM, AMERICAN LE MANS SERIES ANNOUNCE CLASS STRUCTURE FOR UNIFIED SERIES
http://www.grand-am.com/News/GA_New...ucture-for-unified-series.aspx?cid=6383&sid=1
http://www.grand-am.com/News/GA_New...ucture-for-unified-series.aspx?cid=6383&sid=1