jstarkey

Thanks! It used to be that the 2500HD's had a two inch body lift to fit the allison transmission and the 1500's did not. If that is the case then you can drive it but only in a straight line LOL

I doubt that will work in the front. I have 2016 2500 HD Duramax with a CST 4" lift in the front and had to cut some so the tires would not rub and they are still close. The rear stock was fine although close and the truck could articulate without rubbing although I am not sure with your offset. I added 2" blocks to stock to get the back an inch higher than the front. I have Toyo MT 295/65R20's on Sota Novakane 20 x 9 with 0 offset. My tires calc out to be 35.1" diameter with 11.6" width.

2016 Chevrolet 2500HD Duramax with CST 4" Lift and 35" Tires on 20" Wheels with Straight Exhaust and Programmer