I installed the Headstong AAL along with the Timbren SES factory bump stop replacement. Pre lift my rear springs were sagging and the center of hub measurement to the bottom of the fender was 20.5" (1.5" of sag). The post lift measurement was 22.5" which I am happy with since I was wanting to maintain factory height. I installed the 3 springs and removed the factory overload as I got the Timbren SES as a functional replacement for the overload. I am satisfied with the result so far as the ride quality and load capacity is as good as can be expected. I would recommend this to others with a truck camper looking to maintain factory height.
