mini tub? four link?back half?

Don't know if this will help or not but my buddy has a 71 demon that runs in the high 9's. has the alterkation set-up in front. Rear wheel wells are widened stock to the frame rail, inboard spring kit, caltrack leaf springs with caltrack bars. 30 inch M/T drag radial tires in back with 4:10 gear. Car ran 9.92 with a roller 496 lowdeck, 712 HP. in Process of a 512 lowdeck to be dynoed in the next week or so. So I don;t know that you necessasarily have to do 4 link or ladder bar set-up but everyone has their own preferences. just my 2 cents