2010 was the last year, we are still running one of those prototype avenger storms chassis , it was the WKA national Championship kart drove by Eddie Brouse, we won the Big 3 championship on it this season, won 4 of the five races on it, the only one that we did not win was because we broke the clutch key. we ran the kart last year at Sugar Tit speedway in 6 races and won all 6 of them. we are producing a kart very similar to that kart now, the 2013 prototype has won every race that it has been entered in this season. will send u pics if like on the new prototype just email me klb7579@yahoo.com and request them thanks ken