June 3 2022, I installed the Bilstein 5100 RHA on my front and 5100 on the rear of my 2021 3.0 Duramax LT crew cab 4x4. I had just over 1.5 in difference between the front and rear with the factory rake. I used the 2nd from the top line and got just under 2 in of lift. The rear did not change.