I was trying to find the information as well. I went to it a few years ago and it was fun. I don't like that they do big east v. big west and small east v. small west though...it should just be a really big east v. west dual.
Their Dual State is usually around Feb. 10th. The State Tournament is Feb. 25th. I didn't see the East-West dual either. I really like their Dual State though. Also, Kansas needs this web sight http://www.stillwaterwrestling.com/StateChamps/