What width rear end for Duster Street Strip stance?

It's all about how much tire you want to put in there. NHRA says you can not have tire sticking outside of the wheel well. Minnie tubs to the frame rail with the right offset rim will get a 28.5 x 11.5 M/T slick on a stock width axel with springs moved to the frame rail. you will have to clearance the inside fender lip, the forward rocker edge and maybe the rear rocker at the bottom edge..