How can i acquire share in my grand fathers ancestral property

My grand father had ancestral property. He had two sons- my father and his brother. Each got share of property. My father has 5 sons. My father's brother also has 5 sons. My father's brother passed away in 2007. He always wished that his share of property should go to me. Now can i execute the oral will with the comsent of 5 sons of my father's brother and acquire his property. Should i acquire by way of will/inheritance/gift