You can surely get seat in anna university .As cutoff is going to reduce this year.Be confident. 

Dear, the cutoff will get reduced but not to 181. For the past 5 years, the cutoff is around 195-200. It may reduce to 190, but not to 181. And, I am aware about TNEA counselling and cutoff's for more than 4 years and helped many students. Please follow us. We are here to help you. Do comment us for any doubts.