Yes, my Duster is lowered some in the back as well. I use a set of discontinued AFCO 121 lb/in zero arch springs, similar to the reissued Mopar oval track springs. As they settled in I’d say the height is a little lower than factory springs. I also did away with the rear shackles using a set of spring sliders, and the way that I mounted those lowered the car another 3/8” or so.
The end result is about 1” of rake measured at the tops of the wheel openings.
