SS2Sierra, I did the exact lowering of the rear you are looking at with a small amount of rake remaining.. I have a 2016 Sierra Denali Ult 6.2L 4WD and like the look and ride very much... I also purchased a longer magneride sensor arm so it would be closer to stock position. I used the shock extenders as well and lastly had a trim level relearn performed at dealership ...For me it rides better than it did stock and seems to get better mpg by a small amount. Looks better too and I can haul my travel trailer perfectly level. Sent from my SM-N976V using Tapatalk