2018 Silverado LTZ 4door: Duramax diesel, Allison 6 speed, 4x4, It has the leveling kit 2" (hate it), Weld wheels (Les Schwab put to positive of an offset wheel on it, I'm not happy but didn't argue at the time), I have added a Hellwig Big Wig adjustable 1 5/16" rear sway bar, Bilstein shocks...