NHRA STOCK CLASS DUSTER

Couple more questions. Are the D/SA rules still close to the same as they were in the 70's? Except for the safety rules that I'm sure have changed. Also what rear end can you and do you run for that class? Thanks again for sharing. I have some NHRA rule books from 69, 70, 71 and 72. Once in a while I like to look at them think about the olden days